Sustainable Public Procurement Policies on Promoting Scientific and Technological Innovation in China : Comparisons with the U . S . , the UK , Japan , Germany , France , and South Korea

In many countries, sustainable public procurement is a powerful tool to reflect on national strategic intentions and promote scientific and technological innovation. Based on the perspective of an institutional structure, we filtered out the core policies. Using policy bibliometrics, we analyzed Chinese public procurement policies on promoting scientific and technological innovation, revealed policy-making characteristics, and concluded that the Ministry of Finance should appropriately decentralize the policy-making work to other relevant agencies of the State Council. This article compares the main policy tools from four dimensions in China, the U.S., the United Kingdom, Japan, Germany, France, and South Korea. We issued these pertinent strategies: establishing the vendor database for small and medium enterprises, developing a grade system and the post-evaluation system, formulating detailed implementation methods for high-tech products (services), and carrying out classification management for imported products. For sustainable public procurement policies on promoting scientific and technological innovation, this article provides an effective reference to organize the agencies and formulate the detail measures. This article’s research framework could be applied to analyze other industry policies.


Introduction
On 1 April 2014, the Open Work Group of UN Sustainable Development Goals (SDGs) declared that "sustainable public procurement" was the first action plan launched.On 1 January 2016, the 17th SDGs of the 2030 Agenda for Sustainable Development-adopted in September 2015 at a historic UN Summit by world leaders of the UN's 193 Member States-officially came into force [1].The SDGs 12.7 (2017) stated that they would "promote public procurement practices that are sustainable in accordance with national policies and priorities [2]", and called on environmental protection and energy conservation, protecting workers' rights, taking care of backward areas, and conforming to national strategy and security when conducting Public Procurement (PP).SDGs 12.7 would expand the environmental and social benefits brought by government expenditures, and promote the global sustainable development and economic growth transformation into a high-speed track [3].Coming to "value money", PP behavior has been playing a policy function to promote sustainable development.
In many countries, the PP system is a powerful tool reflecting national strategic intention and promoting Scientific and Technological (S&T) innovation [4].It is also an important policy to support domestic enterprises' innovation and development from the demand side [5].In China, PP means government procurement.As an effective system to promote S&T innovation, the role of PP policy has been widely recognized [6].
In China's import and export trade in November 2016, the top three countries or regions were the European Union (EU), the U.S., and the Association of Southeast Asian Nations (ASEAN) [7].Germany, the UK, and France are the top three countries in the EU, Japan and South Korea are the top two countries in ASEAN.This article chooses the above six countries to conduct a comparative analysis with China.
This article introduces the literature from four dimensions: energy-saving and environmentally friendly products, S&T Small and Medium Enterprises (SMEs), high-tech products, and domestic products.We will explain the four dimensions in Section 2.2.2.

Promoting Energy-Saving and Environmentally Friendly Products
Sustainable PP focuses on promoting the investment, development, and production of energy-saving and environmentally friendly products [8].
In China, fiscal fund supporting projects preferentially procure energy-saving and environmentally friendly products and phase out low-efficiency products [9].Mandatory procurement is implemented for products that meet the standards for energy-saving effects and performances [10].Some of China's policies stipulate specific and operable terms for energy-saving and environmentally friendly products, such as the Opinions on Implementation on Government Procurement Energy-Saving Products [11].
The U.S. federal procurement agency has formulated the green procurement plan, which establishes federal environmental enforcement agencies, supervises green PP, and submits annual reports [12].The Federal Acquisition Regulation stipulates ways of procuring eco-type products and utilizing recycled materials [13,14]-ones that have the least impact on people's health and the environment [15].For green PP, the federal government pays particular attention to formulating standards and developing a variety of methods (e.g., minimum price, life cycle cost, price concession, etc.) [16].
The European Union (EU) has formulated the Guidelines for Green Procurement, which explicitly requires implementing environmental protection policies.It has also issued green procurement standards for 18 classes of products and services [17].Most of the member states implemented the National Action Plans (NAPs) for green PP and formulated specific implementation measures [18].The mechanism of developing green procurement varies among the EU member states, and there are mainly two types: centralized procurement represented by the United Kingdom (UK) and independent procurement represented by Germany [19].
Japan encourages manufacturers to develop products that have less impact on the environment, and to enhance environmental awareness in PP [20].To build an environmentally friendly and sustainable society eventually, Japan influences manufacturers of environmentally friendly products based on demand [21].
South Korea has expanded its green product market through mandatory procurement programs to prevent resource waste and environmental pollution, and to achieve sustainable development [22].The scope of eco-products in the green procurement program complies with environmental label certification or green certification in South Korea [23].

Promoting S&T SMEs Development
To promote SMEs development, especially S&T SMEs, PP is an important government issue on sustainable economic development strategy.
For preferential treatment of SMEs, China has formulated many policies, such as SME recognition, equal treatment, reserving shares, reviewing preferences, encouraging SME consortium, subcontracting, and training SMEs [13].China also provides support policies, such as credit guarantees, performance bonds, payment deadlines, and payment methods [24].
The U.S. has formulated preferential policies to encourage SMEs to participate in PP, including reservation contracts and separation contracts, stipulating procurement ratios [25], offering quotations [26], providing loan guarantees, establishing specialized service agencies [27], accrediting procurement representatives and experts, issuing ability certificates, and establishing electronic supply systems [28].
By improving legislation and publicizing rules for PP, the EU provides action guidelines for SMEs to participate in and reduce SMEs' entrance barriers [29].The UK has introduced policies such as "Pre-commercial Procurement of Innovation [30]", "Small Business Research Initiative [31]", and "Forward Commitment Procurement [32]."Germany has stipulated that SMEs have priority in bidding for public projects, which could split for SMEs easy to participate in [33].To encourage SMEs to participate in procurement activities for high-tech products in France, the government reserves shares [34], prioritizes, splits the contract [35], allows bids without contract guarantees and advance payments, and has set up a dedicated service department [36].
Japan has focused interiorly on SMEs' protection in the form of laws, and has supported domestic SMEs through an exception clause in the Agreement on Government Procurement (GPA) [37].Japan's main policies include lowering the entry threshold, splitting the contract, reserving the proportion, and assisting in exploring foreign government procurement markets [38].
South Korea has actively promoted the identification of SMEs' technical products, and requires all public agencies to procure them with priority [39].South Korea pays certain R&D expenses for SMEs' new technology development, and guarantees that the institutions supported by fiscal funds procure these products [40].SMEs' patent fees are supported by the exemption's system, and are funded for applications on board [41].

Promoting High-Tech Products (Services)
High-tech products (services) involve outputs for the key industries supported and protected by the government.PP of high-tech products (services) aim at fulfilling social functions to promote national economic and social development [42].
China has formulated certain policies, such as giving priority to domestic high-tech companies, introducing innovation-oriented technical indicators [43], price concession in bidding, sharing the risks of R&D and consumers (including price subsidies and preferential loans), setting procurement ratios [44], forward ordering or first procuring, and procuring first major technical equipment [45].
For high-tech products' PP, the U.S. has given priority to domestic manufacturers [46] and has protected the domestic high-tech product market by raising the entry threshold [47].It has encouraged emerging enterprises to participate in the development of major strategic technologies, and has designed a larger competitive space in the PP system [48].
PP is tilting toward high-tech products in the EU, thereby supporting the development of high-tech industries [49].Whether or not it is due to being a signatory at the GPA, EU members have a series of policies and regulations that limit imported high-tech products (services), and encourage procurement from the region [50].The UK implements the Innovation Procurement Plan and regards innovation as a key requirement for large-scale equipment and capital planning [51].In Germany, PP policies on innovative technologies and solutions aim to share the risks of R&D and consumers [52]; innovation-oriented technical indicators are introduced in PP processing to encourage new technologies' utilization [53].
Through local procurement ratio restrictions [54], high tariffs on foreign products [55], and preferential treatment for high-tech products (services) [56], Japan has promoted the development of high-tech industries.
In South Korea, fiscal supporting agencies give priority to procurement of high-tech products [57], and have acquired all publicly-owned equipment, such as domestic high-speed trains and nuclear power stations, preferring to procure domestic products if they are expensive [56].

Promoting Domestic Products
It is common practice for all countries to maintain their own interests and protect their own industries in accordance with the GPA.
In China, the PP has focused on achieving the state's policy goals for economic and social development [58], including the protection of key domestic industries [59].For domestic products, the government has implemented priority procurement, minimum procurement share, and compulsory procurement (in certain areas) in fiscal funding projects [60].China has stopped implementing some policy documents that conflict with the GPA, and has accordingly formulated some policies consistent with the agreement [61].To protect key industries, Chinese policies include implanting quota restrictions on international bidding, raising tariffs, reviewing imported products, and importing products attached with technology transformation or services or compensation [62].
According to domestic product PPs in the U.S., the laws include the Buy American Act, the Reciprocal Tariff Act, the Berry Amendment Extension Act, and the Federal Acquisition Regulation.The legislative purpose of the Buy American Act is "Supporting and protecting American industry and investment capital [47]".Even though the U.S. is a member of the GPA, its exception clause still applies to the unopened procurement project and all of its non-members [63].
For EU public facilities, the EU products' procurement proportion must reach more than 50%, and its products can obtain priority if their prices are not above 3% [64].Most EU members require that PP products must meet EU's market standards, which are often difficult for foreign companies [65].In the UK, the fiscal supporting institutions must procure high-tech products such as computers and communications equipment from their domestic companies [66].In France, aviation, railway, communications, and other departments give priority to domestic products [67].For more than €5 million worth of projects or more than €200,000 worth of goods and services, Germany stipulates that procurement must be within the EU [68].
Japan has made full use of domestic policies and various GPA exception clauses to protect domestic industries [56].Its internal policies include stipulating the domestic product's procurement proportion, enjoying special depreciation benefits in case of procuring domestically-made computers, enjoying subsidies, long-term and low-interest loans, and deferring repayment loans in case of procuring domestically-made machinery and equipment [37].Japan's foreign product policies include high tariffs on foreign procurement and restrictions on the GPA exception clause [38].
South Korea has encouraged preferential procurement for domestic products, limits on the number of international tenders, splits contracts, and excludes international suppliers to protect domestic suppliers [56].

International Comparison
We retrieved the Web of Science SSCI with keywords related to "public/government procurement" and "international/cross-border/cross-country comparison", and received the following information.
Most cross-border comparative research on PP involve domestic and foreign markets, companies, and products [69].Research on PP between the U.S. and South Korea shows that the market has traditionally been exclusive from foreign suppliers, and there are several preferential regulations and policies for domestic firms to award procurement contracts [41,57].
Some research involved the organizational structure and management system of typical industrialized countries such as the U.S., Germany, and South Korea, and pointed out their superiority [70].Other research shows PP efficiency based on 25 European Countries [71]; international experiences on health care PPPs (Public-Private Partnership) among 16 countries (10 EU members, Canada, Australia, Chile, Mexico, South Africa, and Lesotho) [72]; market regulatory efforts on rare diseases and orphan drugs in six EU members [73]; and discussion on how fiscal resources' rational allocation can be conducive to low procurement prices and promotion of sustainable procurement policies [74].
There is not much independent and integrated comparative research among the four dimensions on energy conservation and environmental protection, S&T SMEs' development, and high-tech products (services); we regard the EU as an entity.By retrieving the Web of Science SSCI, we obtained the following research: analysis of the construction industry in the Czech Republic and Austria [75]; developed countries' PP policies on technological development [76]; and procurement of three inpatient medical devices in Italy and Spain [77].There is other related research: PP was mostly used to induce new technologies via direct public technology procurement programs as well as R&D procurement [69]; there are preferential policies on SMEs' independent innovation and strengthening business training for Australia, Canada, the U.S., Argentina, Brazil, China, India, Indonesia and Kazakhstan [78] (there is none for EU state members); and in Japan and South Korea, policies on S&T SMEs' development and electronic PP were implemented [79].
There is less comparative research on international PP policies, especially those that discuss the four dimensions.

Research Review
Based on the above literature, scholars had done a lot of in-depth research on energy-saving and environmentally friendly products, S&T SMEs' development, and high-tech products and domestic products.However, there are two deficiencies: (1) A lack of systematic research on policy tools.
Most PP policy research that promotes S&T innovation is on only one of the four dimensions mentioned above, and fewer when compared to all of them [61].
(2) A lack of international comparison research from multiple dimensions.
For PP policies that promote S&T innovation, there is little research on international comparative analysis from multiple dimensions; thus, there is lack of a strong analytical basis for the same [69].
In summary, there is adequate research on different fields, but less comprehensive and systematic PP policy research on promoting S&T innovation at the international level.

Research Framework
First, this article classifies relevant Chinese policy texts, narrows the policy analysis scope, and improves the accuracy.Second, utilizing the policy bibliometrics method [80], we analyze effective policy texts from the four dimensions of policy-making time, policy-making agency, chief agency, and collaboration agencies.International comparison is also from four dimensions: energy-saving and environmental protection products, S&T SMEs' development, high-tech products (services), and domestic products.Finally, based on the conclusions, we issued corresponding policy suggestions.The article's research framework is shown in Figure 1.

Data Source
In this article, China's various policy texts come from three aspects.The first is the "PKULaw" (http://www.pkulaw.cn/)-thedatabase of laws and regulations; the second is the official website of the State Council (SC) or its departments; and the third is related article documents."PKULaw" is a one-stop search platform providing intelligent legal information, jointly launched by the Law Information Center of Peking University and PKU Yinghua Technology Co., Ltd.(Beijing, China)."PKULaw" was built by the Law Department of Peking University in 1985, and has the most mature, professional, and advanced comprehensive legal information retrieval system in China.Due to the concentration of PKULaw, it is the main source of policy collection in this article, supplemented by the official website for SC and government departments.
The above-mentioned countries' policy texts come from three categories: the HeinOnline-Database (http://heinonline.org/HOL/Welcome),websites of the national congress and government departments, and the analytical texts of relevant articles.
For PP policies on promoting S&T innovation in this article, the analysis objects included laws and regulations at a national level in China.The research period for main laws and regulations is 1 January 2003-30 December 2017.It is worth noting that the Government Procurement Law was implemented in 1 January 2003.

Retrieval Strategy and Results
In processing retrieval, we classified policy documents into four categories.Each policy category contained a number of policy tools (policy measures), and a policy tool is in the form of multiple terms (articles).The relationships among the four categories are as follows: Policy document ⊃ Policy category ⊃ Policy Tool (Policy measure) ⊃ Policy term (Data record).
This article mainly involves the classification of policy tools and the selection of keywords.Our search strategy is as follows (shown in Figure 2): (1) Chinese policies' retrieval strategy and results Step 1.According to the article's theme, we chose "government procurement"/"public procurement"/"procurement" + "science and technology"/"innovation"/"technological innovation"/"scientific and technological"/"S&T" as the initial key words to retrieve national level laws.
Step 2. We retrieved the laws at the national level and obtained eight texts shown in Table A1.
Step 3.According to the theme of sustainable PP, we classified the policy texts into three categories: energy-saving and environmentally friendly products, development of S&T SMEs, and other types of policies [1].
Step 4. We continued to classify "other types of policies" in Step 3. We interviewed executives and experts from the Institute of Science and Development of CAS, and the Government Procurement Promotion Center of Zhongguancun in Beijing.Based on their interviews, we classified the "other types of policies" into two categories: high-tech products and domestic products.We finally divided the policy tools into four categories.Step 5.For keyword extraction for the final four categories, we chose the TF-IDF method (Term Frequency-Inverse Document Frequency [81,82]), which is a common weighting method for information retrieval and data mining.In the Python program, we used the Jieba packet (the Chinese word segmentation component) to segment the legal texts.Next, we calculated the weight for the TF-IDF segmentation by using the Scikit-learn packet [83][84][85], which is a simple and effective tool for data mining and data analysis.Finally, we obtained 112 key words with high weightage (shown in Table A2).Step 6.We sought expert consultation for the key words.By visiting institutions such as the Beijing Municipal Science and Technology Commission, and the Shenzhen Municipal Government Procurement Center, we sought the opinions of executives and experts, and confirmed the final keywords for each classified retrieval, as shown in Table A2.Step 7. We retrieved and obtained related policy tools according to the keywords.Then, we obtained 925 data records from the local database, which involved 58 policy documents (see Table 1).Step 8. On completing the data cleaning, we obtained 785 data records, which involved 34 policy documents (Table 1).We then established a Chinese PP policy document database on promoting S&T innovation.Data fields included a release date, policy title, policy-making agency, class for policy tool, and context of policy tool.
(2) Retrieval strategy and results of the above-mentioned six countries: The same method was used to retrieve the policies for the above-mentioned six countries.
The main legal documents retrieved are shown in Tables A7-A13.

Research Methods
For quantitative analysis, this article utilized the policy bibliometrics method, which is a quantitative analysis method used to identify the policy's external characteristics [86].We conducted a comparative analysis of policy-making frequency and policy-making agencies, which is important background information.The agency's policy-making frequency represents the degree of participation in making policies.By analyzing policy-making agencies, we can focus on that agency's status as a leading or collaborative role in the policy-making processing.
For qualitative analysis, we utilized the text mining and comparative analysis methods.The text mining method was utilized in extracting keywords and identifying policy dimensions and tools; its application was in data collection processing [87], as shown in Figure 2. We examined policy tools' differences with the comparative analysis method.
Through comparative analysis of the policies between China and the above-mentioned six countries, we put forward some PP policy suggestions to promote S&T innovation.

Classification of the Policies
There are five different classes of policies implemented in China.The National People's Congress (NPC) enacts laws; SC and its departments issue various plans; SC promulgates various regulations; and SC departments promulgate various rules, as shown in Table 1.
For the formulators of PP policies that promote S&T innovation, the main subject at the highest level is NPC.The Chinese Communist Party Central Committee (CCPCC) enacts the plan at the national level, representing its important position in making decisions.Various plans have no legal effectiveness but are of great guiding significance for the various regulations and rules.Regulations are formulated by the SC.Its various departments set forth state department regulations and department rules.Their effectiveness relationship is illustrated as follows: Law > Plan of State > Regulation > Plan of department > Rule, as shown in Table 1.

Subtotal 49 9
Notes: 1 There are four abolished policies and a policy related to abolished policies, so the abolished policies' total number is five (shown in Table A6). 2 There are four disabled plans, including two plans for the 11th Five-Year (Ministry of Science and Technology), two plans for the 12th Five-Year (SC) (shown in Tables A3 and A5).Therefore, there are nine policies separate from the others.
( (2) The State Plan The state plans mainly involve the Five Year Plan and the medium-and long-term plans by the SC.Once the new Five-Year Plan is released, the old one is disabled.For PP policies on promoting S&T innovation, the plans involve two aspects: one is on The National Economic and Social Development; the other is on S&T innovation, as shown in Table A3. (

) Regulation
In this article, SC regulations refer to the Regulation on the Implementation of Tendering and Bidding Law, and the Regulation on the Implementation of the Government Procurement Law; they are legal regulations for PP and their bidding was formulated by the SC; they are also subordinate to the law.They are shown in Table A4.A5.
(5) Rule For specific problems relating to jurisdiction or industry fields, single departments or joint departments of SC can enact relevant rules, which are mainly management methods and opinions.
Laws, state plans, regulations, and department plans act as base functions in the PP policy system on promoting S&T innovation, and do not involve practical policy tools.In this article, the focus is on related policy documents that serve as effective rules in the 13th Five-Year period.Practical policy tools involve guidelines, standards, and behaviors.Therefore, we chose 34 practical policies after sorting through the retrieved data, in order to obtain a more accurate analysis scope.
They are shown in Table A6.

Date Node Analysis of Policy-Making
As for the revision of some policies, we took the latest release date as the criterion.In addition, we took the year of the release date for measurement and analysis.This is shown in Figure 3.We found that in Figure 3: (1) The highest number of policies were in 2006 and 2007.In the period of the 11th Five-Year, China paid more attention to independent intellectual property, carried out the transformation of S&T achievements, put forward the identification and management of national independent innovation products, and then formulated series of S&T policies, including PP policies on promoting S&T innovation.(2) In 2007, China carried out negotiations on entry into the GPA and submitted its application and initial bid to the WTO Secretariat for the first time.In 2008-2012, the formulation of policies were considerate, so the number was low.(3) In 2011, there were two state plans released on the 12th Five-Year and one document released on abolishing the previous policies, so only three policies were selected for analysis.In 2016, there were four state plans released on the 13th Five-Year, so only three policies were selected for the analysis.(4) There are changes between the amended data and the original data in 2006, 2007, and 2011, due to abolished policies and disabled policies.There are changes between the amended data and the practical data in 2006 and 2011, due to disabled plans.
(5) Between 2004 and 2017, the highest number of practical policies was in 2006.It was between 1-4 years for the other years.

Analysis of Agency's Participation Frequency
There are 16 agencies that participate in the formulation of PP policies for promoting S&T innovation.The total participating frequency of agencies is 70; MOF and SC have a frequency of more than 10.Seven other departments have a frequency of one.This is shown in Figure 4.For practical policies, we found that (Figure 4): (1) With regard to agencies' participation frequency, MOF has the most (27); next is NDRC (8); the others are under 5; and the average is 4.2.(2) Excluding the plans for the Five-Year, there are six practical policies for SC and one for CCPCC.
(3) The number of participating agencies is 14.Participation frequency for the four agencies is above average; this shows that participation from SC departments must be strengthened.

Analysis of Chief Agency
For chief policy-making agencies in 2004-2017, the number distribution is shown in Figure 5.
For practical policies, we look at Figure 5: (1) As for the chief agencies, MOF's leading times are the highest (21); the next is SC (4); the average is 3.7; and the other agencies are under average.
(2) The chief agencies' number is 9.There are four agencies whose leading times are above average.SC contains more than 60 agencies, including administrators, committees, and directly-affiliated institutions.Figure 5 shows that is not a high enough lead for SC's agencies to formulate policies.(3) As the chief policy-making agency, MOF is far above the other departments.

Analysis of Agency's Collaboration
Among the policy-making agencies, the status of an agency's collaboration is shown in Figure 6. Figure 6 shows the following collaboration information in policy formulation: (1) In the sample data, 12 agencies collaborated in formulating policies.The total number of participating agencies is 14 (Figure 4) and the ratio is 85.7%, which is a relatively high percentage, but the ratio is not high compared to overall SC agencies.(2) For collaborating with other agencies, MOF's policy-making number is the largest (11), followed by the NDRC (7), then followed by MIIT (5), and other agencies at 1.
(3) The total number of collaborations is 34 and the average is 2.83.The collaboration number of 75% agencies is less than the average.( 4) The collaboration number is 7 between MOF and NDRC, 5 between MOF and MIIT, and 3 between NDRC and MIIT.The rest of the agencies' collaboration number with each other is less than 3. ( 5) The collaboration network between CCPCC and SC is isolated from the other agencies.
Formulating PP policies that promote S&T innovation requires the participation of several agencies.However, it has been noted that in general, a large number of agencies are not actively involved.The vast majority is below average with regard to policy making (either as a participant or as the chief).Agencies participate less and there is not much at stake for them.In addition, if the policy does not have a large coverage, its effectiveness may be discounted.In order for a PP policy on promotion of S&T innovation in the country, it is important that the dominance of MOF is reduced.On the international stage, developed countries need to realize that MOF has intervened too much in PP policy formulation and a deep misunderstanding about government subsidies is highly possible.The MOF should appropriately decentralize policy-making to other relevant agencies in order to eliminate these unnecessary misunderstandings.

Comparison of Relevant Policies between the Six Countries and China
For PP polices on promoting S&T innovation, there are lots of successful experiences and practices across the globe.It is the consensus and common practice to promote S&T innovation and industry development.Through the formulation and implementation of PP policies, developed countries have accelerated their technological progress and S&T innovation, and have enhanced their competitiveness.
PP policies on promoting S&T innovation follow four classes: (1) energy-saving and environmentally friendly products, (2) development of S&T SMEs, (3) high-tech products, and (4) domestic products.On sorting out policies, China has learnt from the developed countries, adopting the above-mentioned four measures.

Promoting Energy-Saving and Environmentally Friendly Products
For energy-saving and environmental protection products, policies include formulating a green products list, setting the minimum green procurement share, establishing a special green procurement agency [10], and drawing a national action plan on green procurement [12].The policies implemented by the EU and its member states are most effective in this area.As Table 2 shows, different countries focus their attention on the issue in different ways.Table 2 shows that first policy tool is used by all the countries, while the third, seventh, ninth, and tenth policy tools are used less.This indicates that the mentioned countries rely on market forces to promote energy-saving and environmental protection products.There is also very strong national awareness in the U.S., the UK, and Japan on energy saving and environmental protection.In contrast, South Korea has the least number of policies, and mainly focuses on guidance.China's energy saving and environmental protection relies on government promotion.

Promoting S&T SMEs Development
To promote S&T SME development, the policies include reserving procurement share, contract splitting, price concessions, low interest loans, and other means [13].As shown in Table 3, countries focus their efforts on different approaches.As Table 5 shows, the first, third, eighth, and tenth policy tools are used by all the countries, while the seventh and ninth policy tools are used less.It is more prudent to make policies that protect domestic products by increasing tariffs and transferring intellectual property.Second, the U.S. covers all the policy tools, which are more comprehensive; China uses two fewer policy tools than the U.S. due to it not having formally joined the GPA, nor setting a relatively high bidding threshold.The policy tools used in Germany are the lowest.

Discussion
We have analyzed Chinese PP policies that promote S&T innovation and compared them with those of six countries.There are many successful experiences and some defects.

Promoting Energy-Saving and Environmentally Friendly Products
Due to mandatory procurement features for energy-saving and environmentally friendly products, there are some problems that need to be considered: (1) the cost of entering the list is too high; (2) the certification and audit of the product takes a long time; and (3) the product supplier may deliberately raise the price.
At present, excessively emphasizing on the priority of the Environmental Labeling Products List (The List) results in poor operability because there are a lot of products not on the list.In addition, some policies are too general and lack unified support and operating details; thus some procurers are not willing to cooperate with the policies' implementation.
Public policies on energy-saving and environmental protection run an important function for the PP.To promote the energy-saving and environmental protection industry, the green PP policy should play an important role.Therefore, the government should formulate and improve the Green Public Procurement Law and its provisions, enhance the information circulation system of the green PP, establish and improve the supervision mechanism, further strengthen the management system, and increase the enthusiasm of green product manufacturers by utilizing taxes, price subsidies, and fiscal subsidies.

Promoting S&T SMEs Development
There are two kinds of problems with Chinese policies for promoting S&T SME development.The first kind includes poor operability on reserving procurement share; overlap between price deduction policy and other policies; and the less effective credit guarantee in supporting SMEs.The other is as follows: undistinguishing products' S&T content and quality and indistinguishing support for SMEs.One feasible way is to organize and establish a database of SME vendors, which will dynamically update their identification according to different industry standards and real-time data.The relevant departments should formulate "Catalogues of SME Innovative Products and Services" and the SMEs' identification standards of high-tech products (services), which have the priority to be procured under the same condition.

Promoting High Technological Products
In general, there are many PP policies that promote high-tech products (services), but there are some problems: (1) The procurers are not willing to take risks due to the high-tech products (services) not being mature enough; (2) the procurers prefer to choose mature products (services) rather than trying to reduce the maturity of high-tech products (services); and (3) the high-tech products (services) have not entered into large-scale production and application-they do not have competitive advantages in terms of cost and price.
Concerning the aspect of ordering procurement, there are two problems: (1) There is no effective division of the demand scope; and (2) there is no effective collection, selection, and revision for the demand.Therefore, we should establish a grading and post evaluation system, and develop detailed implementation methods for high-tech products (services).

Promoting Domestic Products
On one hand, Chinese policies need to comply with the GPA framework and consider relevant policies that are outside its scope.On the other hand, it is not strict enough for China to justify and review imported products.If the procurers themselves guide the experts, do not understand market conditions, or the reviewing departments are not familiar, policy implementation on domestic product protection will be biased.
Therefore, the imported product list should be divided into three categories: allowed procurement, prohibited procurement, and strictly controlled procurement.For key developing industries with a higher proportion of imported products, the government should preferentially formulate allowed procurement lists and prohibited procurement lists to support local innovation and development.

Improving Participation of Ministries and Committees in Policy Making
Formulating PP policies that promote S&T innovation requires the participation of several agencies.However, it has been noted that in general, a large number of agencies are not actively involved.The vast majority is below average with regard to policy making (either as a participant or as the chief).Agencies participate less and there is not much at stake for them.In addition, if the policy does not have a large coverage, its effectiveness may be discounted.In order for a PP policy on promotion of S&T innovation in the country, it is important that the dominance of MOF is reduced.On the international stage, developed countries need to realize that MOF has intervened too much in PP policy formulation and a deep misunderstanding about government subsidies is highly possible.The MOF should appropriately decentralize policy-making to other relevant agencies in order to eliminate these unnecessary misunderstandings.

Conclusions
Based on analysis of the institutional structure of PP policies for promoting S&T innovation, this article systematically sorts out policies at the national level, and interprets and analyzes those that belong to four different classifications.From the view of policy formulation frequencies, policy formulation agencies, chief agencies, and collaboration agencies, the article analyzes 34 practical policy texts, including 785 policy tool records.We point out that the various SC agencies should strengthen participation and domination so as to accomplish national policies with full integrity.Comparative analysis of the policies for China and the six countries was done on these four dimensions: energy-saving and environmentally friendly products, S&T SMEs' development, high-tech products, and domestic products.Suggestions are provided as an objective reference for policymaking according to the discussion in Section 4.
First, we have accurately described the main structural features for Chinese sustainable PP policies on promoting S&T innovation.Second, by applying the above-mentioned methods, we introduce a way to compare and analyze the differences and backgrounds of policy-making in different countries.Finally, the specific suggestions on sustainable PP are excellent references.
It is worth noting that, so far, few scholars have conducted an international comparative research on sustainable PP policies for promoting S&T innovation.In this article, the method of classification cleaning data can help us to obtain a more accurate analysis scope.This article's research framework provides a new perspective for sustainable PP policies on promoting S&T innovation, and could be applied to analyze other industry policies.TS = (("procurement" OR "procurement" OR "procure") AND ("* small * enterprise" OR "medium * enterprise" OR "micro businesses" OR "micro * businesses") OR ("reserving" OR "share" OR "contract" OR "split" OR "* concession" OR "compensation" OR ("loan" OR "credit") AND "guarantee" OR "establish" AND "* agency" OR "experts" OR "training" OR "train") OR certification") OR "information system" OR "Simplify" OR "* intellectual property *" OR ("order" AND "low interest" OR "foreign" AND "market") OR "green procurement") 2 Promoting High-Tech Products TS = (("procurement" OR "procurement" OR "procure *") AND ((("domestic" OR "enterprise) OR "innovation-oriented" OR "technological indicator" OR "competition space" OR ("import" OR "catalog" OR "bid" OR "* concession *" OR "R&D" OR "research and development" OR "consumer" OR "risk" OR "subside" OR "loan") OR "procurement ratio") OR ("long-term" OR "order" OR "innovative" AND ("new" AND ("technology" OR "product" OR "service"))) OR "("First procure *" OR "First us *" OR) AND "major technological equipment") OR (("First procure *" OR "first us *") AND "major technological equipment") OR "risk compensation" OR "accelerated depreciation" OR ("premium" AND ("subside" OR "compensation") OR "long-term" OR "order" OR ("R&D" OR "research and development") AND "subside"))) 3 Promoting Public Procurement of Energy-saving and Environmentally Friendly Products TS = (("procurement" OR "procurement" OR "procure") AND ("energy-saving" OR "environmental protection" OR "green") AND ("priority" OR "mandatory" OR "guide" OR "directory") OR "standard" OR ("price" AND "concession" OR "reserving" OR "share") OR "certification" OR "label" OR ("new energy" AND "vehicle")) 4 Promoting Public Procurement of Domestic Products TS = (("procurement" OR "procurement" OR "procure") AND ("domestic" AND ("minimum" OR "share") OR ("Restriction" AND ("national security" OR "public safety")) OR ("GPA" AND "exception clause" OR "bid" AND ("threshold" OR "cost)) OR "increase tariffs" OR ("imported" AND ("transfer" OR "service" OR "compensation" OR "priority" OR "ban")))  2 The policy issued to abolish some related policies, including the eighth, ninth, tenth, and eleventh. 3Since 2006, once or twice a year, the MOF and MEP jointly adjusted and released the public procurement list of environmental labeling products.Since 2004, once or twice a year, the MOF and NDRC jointly adjusted and released the public procurement list of energy-saving products.The public procurement activities carried out after the current list should comply with the current list of environmental protection or energy-saving products.The public procurement activities carried out before the issuance of the current list, but have not yet entered the evaluation stage, may comply with the previous list or the current list, according to the procurement documents.Whereas, if the procurement documents do not stipulate, then the previous list and current list can play simultaneously.

Figure 2 .
Figure 2. Retrieval Strategy and Results.Notes: The ordinal number of the figure corresponds to the following steps (China).

( 4 )
The Department Plan In this article, department plans mainly involves plans for S&T innovation.The 11th Five-Year Plan and the 12th Five-Year Plan for scientific and technological innovation that were released by the Ministry of Science and Technology (MOST) are part of department plans.The 13th Five-Year Plan released by the SC is part of the state plan.They are shown in Table

Figure 3 .
Figure 3.The Annual Number Distribution of Policies from 2004~2017.Note: The amended data does not include abolished and disabled policies.The current practical data excludes the disabled plans of the "11th Five-Year" and "12th Five-Year".The follow-up is the same.

Figure 4 .
Figure 4.The Number Distribution of Various Agencies (Including Participation) in 2004~2017.Notes: The agencies' abbreviations are listed as follows: CCPCC-Central Committee of the Chinese Communist Party; CIRC-China Insurance Regulatory Commission; GAC-General Administration of Customs; MEP-the Ministry of environmental protection; MOA-Ministry of Agriculture; MOF-Ministry of Finance; MOFCOM-Ministry of Commerce; MIIT-Ministry of Industry and Information Technology; MOST-Ministry of Science and Technology; MOT-Ministry of Transport; NBS-National Bureau of Statistics; NDRC-National Development and Reform Commission; SASTIND-State Administration of Science.Technology and Industry for National Defense; SC-State Council.SCGO-General Office of State Council.

Figure 5 .
Figure 5.The Number Distribution of the Chief Policy-making Agencies in 2004-2017.

Figure 6 .
Figure 6.Collaboration Network of Policy-making Agencies.Notes: Figures in parentheses indicate the number of policies formulated by the agency collaborating with others; the numbers on the line between departments indicate the number of collaborations among each other.

Table 1 .
The Class and Level of Chinese Policy.
) LawIn this article, the direct laws include only the Tendering and Bidding Law of the People's Republic of China (hereafter referred to as the Tendering and Bidding Law) and the Government Procurement Law of the People's Republic of China (hereafter referred to as the Government Procurement Law).In April 1999, the Ministry of Finance (MOF) passed the Interim Measures for the Administration of Procurement Management, which is the first regulation on PP in China.In 1999, the NPC Standing Committee promulgated the Tendering and Bidding Law.Based on the Interim Measures for the Administration of Procurement Management, the Government Procurement Law came into force on 1 January 2003; it is the basis law for Chinese PP.According to the Chinese, the actual situation, and relevant advanced countries' experiences, the Government Procurement Law was amended in 31 August 2014.The Tendering and Bidding Law and the Government Procurement Law constitute main laws on promoting S&T innovation, as shown in TableA1.TableA1shows six other laws that offer provisions for PP; they play important roles in promoting S&T innovation.Some examples are the Law of the People's Republic of China on Promotion of Small and Medium Enterprises and the People's Republic of China Energy Conservation Law.

Table 2 .
Comparison in Promoting Energy-Saving and Environmental Protection Industry in Different Countries.

Table 3 .
Comparison in Promoting the Development of S&T SMEs in Different Countries.We regard the EU Council Procurement Directives as the mandatory rules obeyed by the UK, DE, and FR; the domestic products mean EU products; 2 Includes national security, public safety; 3 Includes technology transfer, technology service or technology compensation.

Table A6 .
Cont.The abbreviation of agencies is as follows: CCPCC-Central Committee of the Chinese Communist Party; CIRC-China Insurance Regulatory Commission; GAC-General Administration of Customs; MEP-the Ministry of Environmental Protection; MOA-Ministry of Agriculture; MOF-Ministry of Finance; MOFCOM-Ministry of Commerce; MIIT-Ministry of Industry and Information Technology; MOST-Ministry of Science and Technology; MOT-Ministry of Transport; NBS-National Bureau of Statistics; NDRC-National Development and Reform Commission; SASTIND-State Administration of Science; Technology and Industry for National Defense; SC-State Council; and SCGO-General Office of State Council.

Table A7 .
Laws on Government Procurement in the U.S. (Part).

Table A8 .
Laws on Government Procurement in Japan (Part).

Table A12 .
Laws on Government Procurement in France (Part).Act on Entrustment and Authorization of the National Government Procurement Contract 10 Act on Procurement Contracts Involved Sectors of the Water, Energy, Transportation and Telecommunications Note: http://www.assemblee-nationale.fr/.

Table A13 .
Laws on Government Procurement in EU (Part).Concerning the Coordination of Procedures for the Award of Public Works Contracts 2 Relating to the Coordination of Procedures for the Award of Public Service Contracts 3 The Coordination of Procedures for the Award of Public Works Contracts, Public Supply Contracts and Public Service Contracts 4 Coordinating the Procurement Procedures of Entities Operating in the Water, Energy, Transport and Postal Services Sectors 5 On the Coordination of the Laws, Regulations And Administrative Provisions Relating to the Application of Review Procedures to the Award of Public Supply and Public Works Contracts 6 Coordinating the Laws, Regulations and Administrative Provisions Relating to the Application of Community Rules on the Procurement Procedures of Entities Operating in Water, Energy, Transport and Telecommunications Sectors