1. Introduction
China’s manufacturing industry is in a new stage of development from a traditional production mode to digital, networked and intelligent, and the transformation and upgrading of the manufacturing industry is accelerating [
1]. Under the background of a dual carbon target, low carbonization and energy saving becoming the inevitable trend of high-quality development of manufacturing industry. In recent years, measures to reduce carbon emissions have achieved certain results. However, in the development of China’s manufacturing industry, there are still some problems, such as the rising trend of total energy consumption, the consumption structure dominated by traditional energy and the level of green technology lower than the world’s advanced level [
2]. As countries around the world compete to develop digital low-carbon economy, the digital transformation and green manufacturing project implemented by China’s manufacturing industry is crucial to accelerate the intelligent and green development of manufacturing industry.
How manufacturing enterprises achieve flexible, efficient production and sustainable development while reducing cost and increasing efficiency has become the focus of manufacturing enterprises’ survival and competition [
2,
3]. A green manufacturing system based on green technology innovation is the key to solving the problems of a large carbon emission base from the manufacturing industry and the backward construction of green industry chain [
4]. With the booming development of the digital economy, innovative breakthroughs in digital technologies such as artificial intelligence, big data, cloud computing and block chain have promoted the transformation of the manufacturing industry in all links through the penetration of the manufacturing industry [
5]. Countries with strong industries have realized that using digital means to improve the green manufacturing level is an important way to achieve rapid economic growth and balance environmental benefits. Digital technology empowerment has become key to accelerating the greening and intellectualization of the manufacturing industry. As carbon dioxide emissions rise year by year, countries around the world have agreed to reduce greenhouse gases. The trend of green consumption is also forcing the digital transformation of manufacturing [
6]. Green + intelligence is an important link to enhance the competitiveness of digital green manufacturing enterprises [
5].
In the digital environment, the green innovation resources and forms that manufacturing enterprises rely on show exponential growth. Such an innovation environment is favorable for manufacturing enterprises to seek external green innovation resources and to try to carry out exchanges and cooperation with external entities in various ways [
7]. Open cooperation can help manufacturing enterprises acquire key technologies, shorten the innovation cycle and reduce innovation costs and risks [
4]. The change of the digital environment accelerates the breaking of the endogenous logic in the closed green innovation mode [
8]. On the one hand, the use of digital green technology has expanded from within the same manufacturing enterprise to local and remote manufacturing enterprises [
9]. On the other hand, the source and use of funds has also expanded from a single digital green R&D investment to the investment of external digital green innovation (DGI) risk assets [
8]. This creates a more flexible logic of DGI. This phenomenon has attracted close attention from the academic circle, and the concept of open DGI has been proposed, which is the opposite of the traditional closed DGI [
10]. This digital green leverages a wide range of external actors and resources to help them achieve and sustain DGI. This emphasizes that the source of DGI is no longer limited to the digital green knowledge and digital green resources within manufacturing enterprises but also includes the external entities that are widely connected with manufacturing enterprises [
9].
However, the DGI of manufacturing enterprises often needs to face more complex and changeable challenges. On the one hand, the international operation and DGI integration of manufacturing enterprises have entered a new stage. The concept of market segmentation boundaries has gradually weakened [
11]. The accessibility and extensibility of resources make the exact business position and status order of manufacturing enterprises in the market become more ambiguous [
12]. It is also difficult for manufacturing enterprises to achieve success in DGI only by relying on their inherent advantages [
9]. Manufacturing enterprises carry out DGI activities through rapid self-renewal and iteration by constantly learning from partners. More and more manufacturing enterprises are actively building multilateral cooperation networks from the strategic perspective of an innovation ecosystem [
13]. This network can help manufacturing enterprises obtain DGI resources from members of the innovation ecological network by virtue of ecological advantages [
14]. This helps network participants jointly cope with the rapid changes in the digital green market to improve innovation efficiency and achieve value co-creation [
15]. However, how to establish digital green knowledge and digital green resources in the specific digital environment is still very important. The development of digital technologies such as artificial intelligence and Internet of Things has shortened the time and space between manufacturing enterprises. At the same time, it also puts digital green competition face to face. Alternative competition, both within and outside the industry, is becoming very common [
16]. The dynamic capability embodied by organizational flexibility in digital green is particularly important in the digital green context. Manufacturing enterprises need to redefine organizational boundaries to adapt to the competition rules of the digital green market and to seek a balance between the local DGI network (LDGIN) and the remote DGI network (RDGIN) [
9,
17].
On the other hand, digital technology has become the core driving force of green innovation in the innovation ecological strategy, but the tide of reverse innovation ecological strategy is getting worse and worse under the means of geo-cultural dominance and digital green competition [
7,
10]. Driven by digital technology, the interaction among digital enterprises, digital markets, digital users and digital governments has formed a digital ecosystem of interactive sharing of digital resource elements. A digital ecosystem breaks through organizational boundaries and technological distance limits and provides a lot of opportunities for manufacturing enterprises to search for digital green knowledge across the boundary [
18]. DGI network can promote manufacturing enterprises to integrate ecological concept in DGI process. This concept helps to build a complementary collaboration network centered on manufacturing enterprises and radiating to suppliers, manufacturers, research institutions, intermediaries and customers [
4,
7,
9,
10]. The heterogeneous knowledge and resources of multiple innovation subjects can be effectively transferred and integrated to improve the DGI efficiency of manufacturing enterprises [
19]. Due to cultural, geographic and institutional proximity, LDGIN can help manufacturing enterprises access familiar digital green knowledge and digital green resources at a very low cost [
20]. This can not only strengthen the connection between new and old knowledge elements but also help reduce the difficulty of digital green knowledge integration and absorption in manufacturing enterprises [
21]. The LDGIN can also promote the performance improvement of DGI by accelerating the iteration of new and old capabilities of manufacturing enterprises through the gradual inheritance and knowledge accumulation [
22]. The RDGIN avoids the short-sighted and familiar trap of manufacturing enterprises focusing only on local digital green knowledge. This breaks through the path dependence of manufacturing enterprises and the constraints and fetters of existing experience. New technologies and new knowledge that cannot be obtained in the LDGIN can be acquired by manufacturing enterprises to promote the digital green technology track transition and digital green product innovation [
23]. The RDGIN can also facilitate the adaptation and matching of manufacturing enterprises to the external dynamic environment, making it easier for manufacturing enterprises to find potential emerging markets.
Under the background of a digital economy, manufacturing enterprises realize the cross-border flow and sharing of digital green knowledge through a DGI network. On the one hand, some scholars believe that innovation networks can effectively promote communication and trust between cooperative subjects [
24]. The cross-border flow of digital green knowledge is the key to improving the performance of DGI in manufacturing enterprises through a DGI network. On the other hand, some scholars believe that the higher the degree of network relationship between cooperative parties, the higher the degree of knowledge homogeneity [
25]. This is not conducive to heterogeneous knowledge recombination and utilization. Scholars dispute the role of the DGI network in improving the performance of DGI in manufacturing enterprises. Moreover, due to the rapid transformation of the DGI network, the existing studies have not had time to fully discuss the above new problems. In the process of DGI, the digital green experience of manufacturing enterprises in developed countries is naturally regarded as the object to learn and imitate. However, the existing theories cannot provide a way out for the DGI of manufacturing enterprises in developing countries [
26]. The factors that constrain and divide the digital green market and the dynamic management practices of manufacturing enterprises should be discussed in a timely and adequate manner. The combination of digital context and green innovation network brings opportunities and challenges to traditional research. The digital environment is borderless, interconnected and uncertain, which makes the DGI network more valuable for research. However, the discussion based on digital context is still scarce, which highlights the urgent need for the current research on the integration of digital transformation and the green innovation network.
This paper studies the balance mechanism of LDGIN and RDGIN in manufacturing enterprises from the dimensions of digital empowerment and green organization flexibility with the traditional structure–capacity empirical framework. This study covers not only the hard technology aspects of digital technology level and application range, but also the soft power aspects represented by green culture flexibility, green resource flexibility and green capability flexibility. Theoretically, the strategic orientation of DGI and the theoretical level of digital green economy are refined to the micro level of the DGI of manufacturing enterprises. The mechanism of digital empowerment and green organization flexibility on the green innovation performance of manufacturing enterprises is revealed. In practice, this study provides new practical support for manufacturing enterprises to embed strategy and incentive for DGI in the DGI network.
The rest of this paper is structured as follows. The second part is the theoretical basis and research hypothesis. The third part is the study design and the evaluation of questionnaire quality. The fourth part is the empirical test results and analysis of the research hypothesis. Finally, the conclusions of this paper are summarized, and corresponding practical suggestions and future research directions are put forward.
3. Material and Methods
3.1. Data Sources and Samples
In this study, the data were collected from the database of surveys on the operating conditions, digital transformation status and green innovation activities of manufacturing enterprises in most areas of China from June 2021 to March 2022. The respondents were middle and senior managers of manufacturing enterprises. The questionnaire covers four dimensions: local policies, operating conditions, operating measures and digital transformation. Due to the COVID-19 pandemic, online questionnaires were used to obtain data. One thousand questionnaires were sent out, and 773 were returned. The 612 questionnaires were valid. Samples that did not fit the research situation and invalid samples with more missing values were removed. Finally, 562 valid sample data were used in this study. The descriptive statistical characteristics of the samples are shown in
Table 1.
3.2. Standardized Model
The data in this paper were collected through questionnaires, and the measurement of variables was based on existing mature studies. A 5-point Likert scale was used to measure variables. 1 means completely disagree or very low, and 5 means completely agree or very high. Variables are defined in
Table 2, and specific measurement items are shown in
Table 3.
In terms of dependent variable and independent variable, DGI performance is the dependent variable. The scale designed by the existing research is used for reference from the input–output perspective. Four questions were designed to measure the level of DGI performance. An open DGI network is an independent variable. It is divided into two dimensions: a LDGIN and a RDGIN. The LDGIN mainly includes the local DGI activities and partners of manufacturing enterprises. The RDGIN mainly includes the remote DGI activities of manufacturing enterprises.
In terms of moderating variables, digital transformation is the first one. Digital transformation can be divided into two dimensions: digital technology level and digital application range. The level of digital technology is divided into five kinds of digital technology, such as intelligent technology and cloud computing technology. A digital application range measured by manufacturing enterprises for digital technology to master methods and application range. Green organization flexibility is the second moderating variable. Green organization flexibility can be divided into three dimensions: green culture flexibility, green resource flexibility and green capability flexibility.
In terms of control variables, the age, scale, operating income level, ownership type, subdivided industry and province of manufacturing enterprises are control variables. The age of a manufacturing firm is measured by the time the firm was established. Manufacturing firm size is measured by the number of employees currently employed. The scale of manufacturing companies is divided into five grades: 50 employees or less, 50–100 employees, 101–500 employees, 501–1000 employees and more than 1000 employees. The operating income level is divided into 5 levels, including below 1 million yuan, 1 million to 10 million yuan, 10.1–50 million yuan, 50.1 million to 100 million yuan and more than 100 million yuan, which are assigned 1–5 in order. Ownership types are divided into four categories, including state-owned enterprises, collective enterprises, private enterprises, foreign investors and enterprises invested in Hong Kong, Macao and Taiwan. The province in which the enterprise is located is confirmed according to its registration place. The enterprises investigated in this paper are from 24 different provincial administrative regions.
3.3. Deviation Test and Reliability and Validity Test
3.3.1. Deviation Test
To avoid homologous bias in the study sample, homologous method bias and non-responser bias were used for bias testing. Since the questionnaire used in this paper was filled in by the same person at the same point in time, there may be the problem of common methodological bias of data from the same source. Therefore, Harman’s single-factor test was used to test whether the problem was seriously affected. The results show that the variance explained by the first principal component after rotation is 21.604%, which is lower than the requirement of 40%. There is no serious problem of common method bias. In terms of the non-responder bias, the top 1/3 and bottom 1/3 samples were selected for a t-test, in order of questionnaire return. The results showed that there was no significant difference in more than 91.207% of the observed variables, indicating that the non-responder bias would not have a significant effect.
3.3.2. Reliability and Validity Test
In this study, the scales were used to perform exploratory factor analysis and confirmatory factor analysis respectively. The factor analysis results are shown in
Table 3. The results show that the Cronbach’s alpha coefficient of each factor is greater than 0.7 and that the combined reliability coefficient is greater than 0.8, which is much higher than the critical value of 0.6. This indicates that the scale has good reliability. Factor loading values of all scale items were greater than 0.5, indicating that the scale had good aggregation validity. The Bartlett sphericity test value reached significance level. The cumulative explanatory variances of each variable were all greater than 60%, and the KMO values were all greater than 0.7. This shows that the content of the item explains most of the information about this variable. The square root of the average extraction variance of each variable is greater than 0.5, which indicates that the metric has high discriminant validity. In conclusion, the data used in this paper have a good level of structural validity.
3.4. Methods
In the study, Pearson correlation was used to analyze the descriptive statistics and correlation. In the process of regression analysis, independent variables and moderating variables are centralized, and the product term of two-factor interaction effect is constructed. In addition, according to the model setting, control variables, independent variables, moderating variables and interaction terms were successively added into the model for regression analysis. In this study, the regression model reduces the impact of heteroscedasticity by robust standard error.
5. Conclusions and Discussion
At present, the spatial structure perspective of open DGI network is an extremely important topic in the field of DGI management. In this study, the dual carbon goal and the background of the digital intelligence era are fully considered in the study of open DGI network. Open DGI network is divided into LDGINs and RDGINs. The questionnaire sample data from middle and senior managers of manufacturing enterprises are used to test the influence mechanism of the balance between LDGINs, RDGINs and two DGI networks on the DGI performance of manufacturing enterprises. At the same time, different dimensions of digital transformation and green organization flexibility are examined to reveal their moderating effects.
The results of this study are as follows. (i) The effect of an open DGI network on the DGI performance of manufacturing enterprises is heterogeneous due to LDGINs and RDGINs. (ii) The establishment of embedded links in DGI networks inevitably requires the corresponding costs of manufacturing enterprises. (iii) The balance between LDGINs and RDGINs has an important impact on the DGI performance of manufacturing enterprises. (iv) Digitization and organizational innovations are changing the way manufacturing companies operate. (v) The balance of DGI network embedding in practice shows the important role and enlightening significance of local and remote search in developing countries.
The discussion on the above five results is as follows.
(i) The LDGIN positively promotes the DGI performance of manufacturing enterprises. However, the embedment of the RDGIN has a marginal diminishing mechanism. On the one hand, LDGIN focus on the local scale. This not only emphasizes that manufacturing enterprises conduct DGI activities with different DGI subjects in the local scope but also establishes comprehensive DGI connections. The main bodies in the LDGIN have more similar institutions, laws, human history and social cognition [
38,
39,
40]. Therefore, frequent and close digital green information interaction is conducive to the formation of strong relational links. This will not only make it easier to establish DGI partnerships and maintain the long-term stable operation and development of DGI networks but also promote the practice of DGI in manufacturing enterprises and improve the performance of DGI. On the other hand, a RDGIN emphasizes the DGI network links within the reach of manufacturing enterprises [
48,
49,
50,
52]. When manufacturing enterprises are embedded in a RDGIN to a low degree, manufacturing enterprises can acquire a large amount of heterogeneous, diverse and unique digital green knowledge and digital green resources through communication with subjects with different backgrounds in the network. This can not only improve the breadth of digital green knowledge and the flexibility of DGI but also help manufacturing enterprises to acquire, transfer, integrate and create digital green knowledge and digital green technology by taking advantage of local and remote resources and markets [
51,
52,
54].
(ii) Manufacturing enterprises are over-embedded in the RDGIN and rely more heavily on network members. This will not only cause excessive redundancy of digital green resources and reflect as excessive reliance on DGI but also increase the risk of digital green intellectual property leakage [
50,
51,
52,
53]. At the same time, such weak links are difficult to effectively share important digital green knowledge and digital green resources, and it is difficult to quickly reach a solution to the problem with the same interests in the changing environment. Moreover, due to the large differences in economy, politics and culture among network members, the DGI strategies formed and the DGI process experienced are often quite different. This will reduce the absorption capacity and transfer efficiency of manufacturing enterprises for digital green knowledge and digital green technology [
55,
56]. Manufacturing enterprises’ excessive embedding in a RDGIN has a negative impact on the improvement of the DGI performance of manufacturing enterprises.
(iii) The comprehensive balance and relative balance indicators constructed in this paper show that the moderate balance between LDGINs and RDGINs can promote the improvement of the DGI performance of manufacturing enterprises. The generation of a DGI is not only the process of a LDGIN expanding into a RDGIN but also the process of a RDGIN deepening to LDGINs [
51,
59,
60]. Its essence is the result of the two-way development of a LDGIN and a RDGIN. Variables of digital transformation and green organization flexibility are used to verify the appropriateness of the embedding degree of DGI [
63]. On the one hand, isolated digital green technology elements are difficult to bring a digital green effect into play. The relationship between LDGIN and DGI performance of manufacturing enterprises can be enhanced only when the realization of higher digital technology level is combined with a greater digital application range. On the other hand, the realization and application of digital green core technology will not appear in a wide range of diffusion phenomenon.
(iv) The realization of the management efficiency of manufacturing enterprises comes from the arrangement of hierarchical and functional organizational structure [
72,
73]. However, the problems of information asymmetry and layer redundancy in traditional operation mode make the improvement of organizational performance always face a bottleneck. Digital transformation enables application entities to coordinate and use resources in new ways [
63,
64,
65]. Digital is not only the carrier of effective information transmission but also has become a factor of production in collaborative circulation. In the process of reshaping organizational methods and processes, AI, 5G and edge computing are, respectively, used to solve intelligence problems, connectivity problems and efficiency problems to improve organizational performance. The establishment of digital economy innovation platform should strengthen the data-driven ability and form the open innovation pattern of enabling industry with platform digitization [
76,
77].
(v) Developing countries have great dependence on external digital green resources in terms of digital green core technologies. This inevitably requires national policies to tilt toward the digital green core technology field. The digital green technology and digital green resources of the LDGIN should be fully utilized to consolidate the performance of DGI [
82,
83,
84,
85,
86,
90]. The positive role of the two DGI networks should be brought into full play to improve the level of digital green core technology and digital green competitiveness.
The theoretical and practical implications of this study are as follows. This study covers not only the hard technology aspects of digital technology level and application range but also the soft power aspects represented by green culture flexibility, green resource flexibility and green capability flexibility. Theoretically, the strategic orientation of DGI and the theoretical level of digital green economy are refined to the micro level of the DGI of manufacturing enterprises. The mechanism of digital empowerment and green organization flexibility on the green innovation performance of manufacturing enterprises is revealed. In practice, this study provides new practical support for manufacturing enterprises to embed strategy of and incentives for DGI in a DGI network. The flexibility and dynamic capability brought by the flexibility of green organizations should be effectively improved to enhance the degree of embeddedness and integration among digital green technologies. The digital green upgrading of the old technology structure should be promoted to improve the DGI performance of manufacturing enterprises.
Although the research objective has been achieved, there are still some shortcomings in this paper, which provides a direction for follow-up research. First, DGI in the context of dual carbon goals and digital intelligence is a leading topic in innovation management and business practice. There is a lack of large-sample empirical studies and standardized measures for many of these constructs. This is not only the novelty of this paper but also, objectively, the inevitable challenge of this research. It is expected that more scholars will participate in the discussion of DGI in the future. Second, this paper focuses on DGI performance as a variable factor. In this paper, the overall process of DGI performance improvement is not fully reflected. In future studies, the theoretical framework of the spiraling path of network construction, capacity improvement and performance promotion can be established to reveal the mechanism of the DGI performance improvement process.