3.1. Model Construction
The structural equation model (SEM) consists mainly of measurement and structural models. The measurement model is primarily used to reveal the relationship between observed and latent variables, allowing us to understand how observed variables reflect and measure latent, unobservable variables [
23,
24]. The structural model mainly investigates the relationships between latent variables, helping us understand their interactions and influence mechanisms. Based on the structural equation modeling process, the model for promoting the digital transformation of manufacturing enterprises to enhance green low-carbon performance is constructed as follows:
(1) Measurement Model Equation
(2) Structural Model Equation
Here, X is set as the observation indicator for the exogenous latent variable (
),
is set as the observation marker for the endogenous latent variable (
), and
and
form the coefficient loading matrix of the measurement equation. The structural equation model is constructed in a more direct and easy-to-understand way as shown in
Figure 2. Among them,
and
represent the latent variables of digital intelligent transformation of manufacturing enterprises, X and Y represent the observed variables of digital intelligent transformation of manufacturing enterprises promoting green and low-carbon performance improvement, and E represents uneven items.
The structural equation model for promoting green low-carbon performance through digital transformation in manufacturing enterprises contains the following hypotheses:
(1) In the measurement model equation, error terms and have the same characteristics, meaning their mean values are 0.
(2) In the structural model equation, the error term also has the same property, with a mean value of 0.
(3) All error terms in the measurement model equation are independent of each other, with no correlations between them. Moreover, these error terms are also independent of the latent variables.
(4) The error term in the structural equation model is also independent of error terms and in the measurement model and the exogenous latent variable , with no correlations between them.
Therefore, in constructing the structural equation model to promote green low-carbon performance through digital transformation in manufacturing enterprises, the key to solving the model is to determine and , and the four essential coefficient matrices B and .
3.2. Theoretical Analysis and Hypotheses
Establishing an environmentally friendly and resource-efficient green development society is an urgent requirement for promoting the green, low-carbon transformation of China’s economic and social development and an essential task for achieving carbon peaking and carbon neutrality goals [
25]. The new generation of digital technologies empowers the development of the real economy, providing significant opportunities and possibilities for the green development of industries such as production and services. The deep application and integration of digital and intelligent technologies in advanced manufacturing and modern services not only facilitate carbon reduction and environmental benefits for enterprises but also effectively promote the comprehensive efficiency of manufacturing enterprises [
26,
27].
Currently, two main methods for measuring green low-carbon performance in enterprises are the single-indicator and multi-dimensional indicator methods. The single-indicator method measures green low-carbon performance primarily by using a single metric, such as the number of green patents, green total factor productivity, or emissions of carbon dioxide and sulfur dioxide from fossil fuels, as the indicator of an enterprise’s green low-carbon development level [
28].
The biggest problem with the single-indicator method is that it must comprehensively consider an enterprise’s green, low-carbon performance. The conclusions are limited and need more objective and accurate, resulting in significant limitations [
29]. The multi-dimensional indicator method measures green low-carbon performance based on comprehensive efficiency, considering energy and resource intensity, pollutant emission reduction, low ecological damage, increased labor productivity, and robust and sustainable development capabilities [
30]. Therefore, it is widely favored by scholars and practitioners in practical applications. In this paper, the multi-dimensional indicator method is used to measure the green low-carbon performance of enterprises.
At the Fourth Plenary Session of the 19th CPC Central Committee, data were defined for the first time as the fifth essential production factor, following capital, land, labor, and entrepreneurial talent [
9]. The report of the 20th National Congress of the CPC also explicitly stated the need to build a digital economy with data as a critical element. The digital transformation of manufacturing enterprises involves using data as a new clean production factor to achieve carbon reduction and sustainable development. Applying new-generation digital technologies, such as big data, cloud computing, and artificial intelligence, in manufacturing enterprises can reduce repetitive production processes, optimize production workflows, and monitor precise material usage during the production process [
31]. Additionally, by leveraging data elements throughout the industrial chain, digital technology enables precise carbon emission management and deep integration of emission reduction across critical areas such as energy and industry, integrating the role of digital technology throughout crucial sectors covered by the “carbon peaking and neutrality” goals. Finally, digital technologies continually reduce carbon emissions, achieving low-carbon, or even zero-carbon, outcomes. Digital transformation replaces repetitive labor [
32]. Digital development promotes technological innovation and progress in manufacturing enterprises, improving green, low-carbon performance [
33]. The application of digital technology in enterprises can replace low-end labor for routine and repetitive production tasks, thereby effectively reducing labor costs, lowering overall production and operational costs, encouraging enterprises to allocate saved costs to R&D and innovation, optimizing production processes and resource allocation, reducing energy consumption per unit of output, reducing carbon emissions and pollutants, and enhancing sustainable development capabilities [
34,
35]. Based on the above analysis, the author proposes the following research hypothesis that digital transformation and upgrading of manufacturing enterprises enhance green low-carbon performance through technological innovation:
H1. Digital transformation promotes precise production and energy conservation in manufacturing enterprises, effectively reducing unit energy consumption and significantly impacting the improvement of green low-carbon performance.
H2. Digital transformation improves the refinement of production processes and procedures in manufacturing enterprises, enhances sustainable development capabilities, and significantly impacts the improvement of green, low-carbon performance.
H3. Digital transformation replaces part of the routine and repetitive labor force, reducing unit energy consumption and pollutant emissions and positively impacting green, low-carbon performance.
Promoting new industrialization is to achieve Chinese-style modernization, with its main development directions being intelligent, high-end, and green [
36,
37]. The report of the 20th National Congress of the CPC explicitly proposed building a high-quality, efficient new system for the service industry, promoting deep integration between modern services, advanced manufacturing, and modern agriculture. Servitization of manufacturing refers to the shift from simply producing products to producing products and providing high-quality services. This involves embedding new-generation digital technologies, such as the industrial internet, into production, management, and sales, empowering new manufacturing and fostering innovative service models. It is also an essential measure for advancing the structural upgrading and modernization of manufacturing, promoting technological progress, and enhancing management efficiency to facilitate pollution reduction [
38]. The development of serviced manufacturing helps enterprises move their value chain towards higher value-added areas, for instance, transforming from the production stage to extending and complementing the chain towards product R&D, brand building, personalized service production, and the design and use of digital service solutions. This transformation can mitigate massive energy consumption in manufacturing, optimize the industrial structure, promote energy conservation, and reduce pollutant emissions [
39]. The organizational structure of traditional manufacturing enterprises is mostly based on functional divisions, with processes divided by departments and functions. This often leads to fragmented operations and information silos, resulting in inefficient information flow and reduced operational efficiency. The digital empowerment of enterprises aims to break these information silos, reorganize and optimize processes, and build “end-to-end” business workflows from a holistic perspective, thereby enhancing operational efficiency and improving sustainable development capabilities [
3,
40]. Based on the above analysis, the author proposes the following research hypothesis that digital transformation and upgrading of manufacturing enterprises enhance green low-carbon performance through industrial structure upgrading:
H4. Digital transformation drives the servitization of manufacturing, reducing unit energy consumption and pollutant emissions and significantly impacting the improvement of green low-carbon performance.
H5. Digital transformation promotes the production of high-value-added products, conserves energy, and reduces pollutant emissions, significantly impacting the improvement of green low-carbon performance.
H6. Digital transformation optimizes business processes, enhances sustainable development capabilities, and significantly impacts the improvement of green low-carbon performance.
Increasing green R&D investment enhances green low-carbon performance in enterprises [
41]. Digital transformation drives enterprises to innovate and conduct R&D, increasing green R&D investment by integrating digital resources and achieving multi-dimensional innovations such as digital products and business models [
42,
43]. On the other hand, applying new digital technologies will inevitably create more new high-tech jobs, attracting high-quality human capital and leveraging the scale effect of talent. By absorbing new technologies and advanced management practices, enterprises can achieve innovation, improve innovation efficiency, and indirectly enhance green low-carbon performance [
44]. Digital transformation effectively reduces the likelihood of information asymmetry. The development and application of digital technologies in manufacturing enterprises inherently promote the dissemination of information and knowledge, reduce the cost of information and technology flow, and effectively alleviate information asymmetry across departments, between enterprises and customers, and between enterprises and suppliers throughout the industry chain [
45]. This promotes convenient development in technology cooperation and talent exchange between enterprises and industries, reduces communication and learning costs, accelerates knowledge flow, promotes the technology spillover effect, and enhances enterprise innovation capabilities—digital transformation forces enterprises to increase environmental governance investments. The pressure to achieve the “dual carbon” goals drives traditional manufacturing industries to undergo digital transformation and upgrading. They are reducing unit energy consumption and pollutant emissions, forcing enterprises to increase R&D and innovation efforts and enhancing their sustainable development capabilities. On the other hand, environmental regulations driven by environmental policies a nd requirements also force manufacturing enterprises to allocate more resources to green technology R&D, enhancing their green innovation capabilities. This means that the impact of environmental regulations on digital transformation in manufacturing has shifted from a “compliance cost effect” to an “innovation compensation effect”. Based on the above analysis, the author proposes the following research hypothesis that digital transformation and upgrading of manufacturing enterprises enhance green low-carbon performance by reshaping resource allocation:
H7. Digital transformation increases R&D investment, reduces unit energy consumption, decreases pollutant emissions, and enhances sustainable development capabilities, significantly impacting the improvement of green low-carbon performance.
H8. Digital transformation reduces information asymmetry in manufacturing enterprises, enhances sustainable innovation capabilities, and significantly impacts the improvement of green low-carbon performance.
H9. Digital transformation, by increasing environmental regulation and investment, reduces unit energy consumption and decreases pollutant emissions, significantly impacting the improvement of green low-carbon performance.
Based on the above theoretical analysis and hypotheses, there are four latent variables in the structural equation model for promoting green low-carbon performance through the digital transformation of manufacturing enterprises: technological innovation, industrial structure transformation, upgrading, reshaping resource allocation, and green low-carbon performance. The observed variables for technological innovation include precise production and energy saving, improving production process refinement, and replacing part of the routine and repetitive labor. The observed variables for industrial structure transformation and upgrading include promoting the servitization of manufacturing, producing high-value-added products, and optimizing business processes. The observed indicators for reshaping resource allocation include increasing green R&D investment, reducing information asymmetry, and increasing environmental investment. The observed variables for green low-carbon performance include reduced energy consumption per output unit, reduced pollutant emissions, and enhanced sustainable development capability. According to the principles of the structural equation model, the schematic diagram of the structural equation model for promoting green low-carbon performance through the digital transformation of manufacturing enterprises is shown in
Figure 3.
3.3. Data Collection and Analysis
Questionnaires and field interviews were primarily used to collect data for this study on the impact of digital transformation in manufacturing enterprises on green low-carbon performance under the “dual carbon” goals. The Likert 7-point scale was adopted, inviting five universities from Northwest University, Xi’an University of Architecture and Technology, La Trobe University, Anhui University of Finance and Kunming University of Science and Technology, mainly engaged in the research direction of digital economy, enterprise innovation management, digital technology application and management, 20 experts and scholars with doctoral degrees or senior titles, 80 enterprise managers, and 200 manufacturing professionals from 24 manufacturing enterprises, including Shaanxi Drum Power, Shaanxi Automobile Group, Xifei Company, Fast Group, Yanchang Petroleum Group and Shaanxi Nonferrous Metals Holding Group Co., Ltd., are engaged in the digital transformation or digital manufacturing of manufacturing enterprises, which will bring about technological innovation, industrial structure transformation and upgrading, and reshape the observed variables contained in enterprise resource allocation, and promote enterprises.
(1) Questionnaire Design and Revision. The questionnaire on the impact of digital transformation on green low-carbon performance in manufacturing enterprises was divided into two parts. The first part provided instructions for filling out the questionnaire, including the meaning of different values on the Likert 7-point scale and the indicators for measuring green low-carbon performance. The second part contained the primary survey, consisting of 9 questions that covered nine observed variables related to technological innovation, industrial structure transformation and upgrading, and reshaping resource allocation, driven by digital transformation, to promote green, low-carbon performance. Respondents were invited to rate these variables using objective questions, resulting in evaluation data.
(2) Questionnaire Distribution and Collection. To ensure alignment between the questionnaire design and the research questions, the initial draft was tested on a small sample, and experts reviewed the preliminary survey results to guide necessary revisions. The formal questionnaire distribution lasted for 10 days, using face-to-face, online, and WeChat methods. Three hundred questionnaires were distributed, 291 were returned, and 286 valid questionnaires were retained after removing invalid ones, yielding an effective response rate of 95.3%. These questionnaires served as the sample data for evaluating the impact of digital transformation on green, low-carbon performance in manufacturing enterprises.
(3) Data Sorting and Analysis. To ensure that data collection matched the research questions, the research team conducted statistical analysis and sorting, focusing on the mean, maximum and minimum values, skewness, and kurtosis of the data. This ensured that the processed data maintained high reliability and validity, providing a scientific and objective basis for subsequent research.
1) Statistical Description of Data
The sample data collected to evaluate the impact of digital transformation on green low-carbon performance in manufacturing enterprises was analyzed using descriptive statistics with SPSS (version 22), and the results are shown in
Table 1.
As can be seen from the data shown in
Table 1, the average values of the nine observed variable data have little difference, are relatively stable, the standard deviation is relatively concentrated, and the discreteness of the observed variable data is not great. The obtained nine observed variable data can scientifically and effectively reflect the current situation of the impact of the digital intelligence transformation of manufacturing enterprises on the low-carbon life performance of enterprises. Overall, the selected observed variables are reasonable and, to some extent, reflect the significant impact of digital transformation on green, low-carbon performance in manufacturing enterprises.
2) Reliability and Validity Test
① Reliability Test
The Cronbach method was used to conduct a reliability test on the sample data collected to evaluate the impact of digital transformation on green low-carbon performance in manufacturing enterprises.
The Cronbach’s alpha coefficient was tested using SPSS (version 22), a social science statistical analysis software (
Table 2).
Table 2 shows that the overall reliability coefficient for the impact of digital transformation on green low-carbon performance in manufacturing enterprises is 0.900, greater than the generally recognized reliability value of 0.8, indicating that the obtained data are reliable.
② Validity Analysis
Using SPSS (version 22), a social science statistical analysis software, exploratory factor analysis was conducted to analyze the validity of the data regarding the impact of digital transformation in manufacturing enterprises on green low-carbon performance.
The test results, shown in
Table 3, showed a KMO value of 0.873 and Bartlett’s test of sphericity value of 574.561.
The calculated value of KMO is greater than the generally accepted validity value of 0.7, indicating that the research design’s observation indicator system has good construct validity and that the impact of digital transformation in manufacturing enterprises on green, low-carbon performance has strong explanatory power.
The reliability and validity analysis results of the data collected on the impact of digital transformation in manufacturing enterprises on green low-carbon performance indicate that the reliability and quality of the collected survey data are dependable, and the construct validity is good, supporting the subsequent research on the impact of digital transformation on green low-carbon performance in manufacturing enterprises.
3.4. Model Solution and Results
Based on the research hypothesis that digital transformation and upgrading of manufacturing enterprises enhance green low-carbon performance through technological innovation and combined with the principles of the structural equation model, the structural equation model for promoting green low-carbon performance in manufacturing enterprises was constructed using AMOS software, as shown in
Figure 4.
The data obtained through surveys was standardized using SPSS software and subjected to reliability and validity tests before being imported into AMOS software for model fitting. In the discrepancy section, the maximum likelihood method was selected for parameter estimation.
To verify the reliability of the driving factors and the scientific validity of the constructed structural equation model, some fit indices were examined and calculated, with the following results.
Notes for Model (Default model)
Computation of degrees of freedom (Default mode) Result (Default model)
Minimum was achieved
Chi-square = 59.593
Degrees of freedom = 45
Probability level = 0.071
The value of CMIN (Chi-square value) in the calculation results is shown in
Table 4.
The chi-square value of CMIN reflects the difference between the sample covariance matrix and the implicit covariance matrix. Generally speaking, the smaller the chi-square value, the smaller the difference between them, that is, the better the model fits. The table shows that the CMIN (chi-square value) of the structural equation model for promoting green low-carbon performance in manufacturing enterprises through digital transformation is 1.324, indicating that the model fit is good.
The value of RMSEA in the calculation results is shown in
Table 5.
From
Table 5, it can be seen that the RMSEA value of the structural equation model for promoting green low-carbon performance in manufacturing enterprises through digital transformation is 0.052 < 0.08, indicating that the relationship analysis between the structural equation model components is precise, and the data collected provides valid measurement and fitting results for the model.
Based on the data collected on promoting green, low-carbon performance through digital transformation in manufacturing enterprises, AMOS software was used for model fitting.
Table 6 shows the regression weights of the observed variables for the latent variables.
“S.E.” in
Table 6 is the abbreviation of Standard Error, which is used to measure the accuracy of the estimated values of model parameters (such as path coefficient) and reflects the dispersion degree of the sampling distribution of the estimated values of parameters. The smaller the standard error, the higher the reliability of parameter estimation. According to the calculation results, although the S.E. values of the latent variable technological innovation, industrial structure transformation and upgrading, and reshaping enterprise resource allocation on green and low-carbon performance are relatively high, they are still within the acceptable range. The S.E. values of the other nine observed variables corresponding to the latent variables are all low, and the estimated values of the parameters are highly reliable. C.R. is the abbreviation of Critical Ratio, which is used to measure the ratio between non-standardized load coefficient and Standard Error, to evaluate whether the direct effect between variables is significant. C.R. is used to calculate the
p value to judge whether the path coefficient is statistically significant. According to the results of the
p value, the significance of the measurement results of the three observation variables, namely, improving the production process and process refinement, producing high value-added products, and increasing environmental protection investment, to the latent variables are 0.206, 0.098 and 0.153, respectively, and the significance level is greater than 0.05, which is not significant. The rest are significant and accept the original hypothesis. The regression weights of the observed variables for the latent variables obtained from
Table 6 were standardized, resulting in the standardized regression weights as shown in
Table 7.
In the structural equation model (SEM), “Estimate” usually refers to the estimated parameters, which are used to describe the relationship between latent variables and observed variables. Parameter estimates can help researchers understand the direct and indirect effects between variables and the statistical significance of these effects. If the
p-value corresponding to the estimated value is less than the preset significance level (usually 0.05), the path can be considered significant, that is, there is a statistically significant correlation between variables. From
Table 6 and
Table 7, the measurement of observed variables for latent variables in the digital transformation of manufacturing enterprises promoting green low-carbon performance, as well as the measurement of relationships between latent variables, indicate that the industrial structure transformation and resource reallocation brought about by digital transformation significantly enhance green low-carbon performance. In other words, digital transformation and upgrading in manufacturing enterprises effectively promote green, sustainable development through structural transformation and resource reallocation. From the measurement results of observed variables, such as reduced energy consumption per unit output, reduced pollutant emissions, and enhanced sustainable development capability, it can be seen that digital transformation and upgrading in traditional manufacturing enterprises significantly and effectively improve green low-carbon performance by reducing unit energy consumption, decreasing pollutant emissions, and enhancing sustainable development capability.
From the measurement results of observed variables on latent variables such as technological innovation, industrial structure transformation and upgrading, and resource reallocation in promoting green low-carbon performance through digital transformation in manufacturing enterprises, it can be seen that the measurement results for precise production and energy saving, replacement of part of routine and repetitive labor, promotion of servitization of manufacturing, business process optimization, increased green R&D investment, and reduction in information asymmetry are significant. This effectively supports the original hypotheses, meaning Hypotheses H1, H3, H4, H6, H7, and H8 are accepted. The significance levels for the measurement results of three observed variables on latent variables, namely improving production process refinement, high-value-added product production, and increasing environmental investment, are 0.206, 0.098, and 0.153, respectively, all greater than 0.05. Based on the principles of analyzing structural equation model measurement results, these measurement results do not support the original hypotheses, meaning that Hypotheses H2, H5, and H9 are rejected. Based on the measurement and analysis results, the accepted and rejected hypotheses are presented in tabular form, as shown in
Table 8.
3.5. Robustness Test of the Model
When testing the robustness of the structural equation model (SEM) of manufacturing enterprises’ digital intelligent transformation promoting green and low-carbon performance improvement, the method of changing the sample range is mainly adopted. In the original model, 286 valid data were obtained through questionnaires and interviews, and it was concluded that hypotheses H1, hypothesis H3, hypothesis H4, hypothesis H6, hypothesis H7, and hypothesis H8 were accepted, while hypothesis H2, hypothesis H5 and hypothesis H9 were rejected. Now, the sample data will continue to be collected by the same method, and the number of experts and scholars in colleges and universities will be expanded to 32 in three universities, including Xi ’an Jiaotong University, Anhui University, and Laurel University, and the managers and business personnel of the digital intelligent transformation of manufacturing enterprises will be expanded to 435 in total, including Xidian Switch Electric Company, Shaanxi Coal Chemical Industry Group Company, and Maike Metal International Group Co., Ltd., and a total of 452 survey and interview data will be collected, including 448 valid questionnaire data, with an effective recovery rate of 95.9%. After testing the reliability and validity of the data, the conclusion of accepting and rejecting the original hypothesis is consistent with the previous one by using AMOS software, which shows that the structural equation model of manufacturing enterprises’ digital and intelligent transformation promotes the green and low-carbon performance of enterprises to maintain good stability.
3.6. Results Analysis and Discussion
Based on the above measurement and analysis results, digital transformation in manufacturing enterprises can promote precise production and energy saving, replace part of the routine and repetitive labor, drive the servitization of manufacturing, optimize business processes, increase green R&D investment, and reduce information asymmetry. This effectively reduces unit energy consumption and pollutant emissions, enhances sustainable development capability, and significantly promotes green, low-carbon performance improvement. The acquisition of this research conclusion not only effectively verifies the scholars’ view that the transformation of digital intelligence can promote enterprises to reduce costs and increase efficiency, reduce carbon and reduce emissions, and enhance their green and low-carbon sustainable development ability, but also has important scientific guiding value for enterprises engaged in manufacturing production, especially for improving the managers’ understanding of applying the new generation of digital technology to production, management, and operation, promoting the transformation and development of digital intelligence, strengthening the managers’ belief in digital intelligence transformation and reducing the resistance of employees to the transformation of digital intelligence. From the nine paths of digital intelligent transformation of manufacturing enterprises to promote green and low-carbon performance, six assumed paths were obtained according to the measurement results, which put forward a clearer direction and a more effective digital intelligent transformation path for manufacturing enterprises to improve green and low-carbon performance and have important guiding value for manufacturing enterprises to apply new generation information technologies such as artificial intelligence and industrial internet to enterprises, develop intelligent production, information management, optimize business processes, and realize energy conservation, emission reduction and green sustainable development.
Meanwhile, an analysis of the unsupported original hypotheses related to improving production process refinement, promoting high-value-added product production, and increasing environmental regulation and investment suggests that refining production processes is part of business process optimization. It involves optimizing and reengineering production, management, sales, and service processes in traditional manufacturing enterprises, partially refining production processes, and managing each step in more detail. The relationship between improving production process refinement and business process optimization has already been fitted and analyzed in the structural equation model fitting process. Promoting high-value-added product production during advanced stages of digital transformation can effectively reduce carbon emissions and unit energy consumption while enhancing green, low-carbon performance. However, at the current stage, increasing the value-added of products requires more resources, workforce, and financial investment, and the results may need to be more evident. During the fitting measurement, even though it is a valid observed variable, experts and practitioners considered the current circumstances of manufacturing enterprises when providing survey data. Increasing environmental regulation and investment can effectively reduce carbon and pollutant emissions. However, as an external policy measure, environmental regulation imposes policy pressure on enterprises, requiring them to allocate more resources and invest more workforce, financial, and material resources to meet pollutant reduction requirements. As a result, unit energy consumption per output may increase rather than decrease due to short-term actions taken by enterprises to meet environmental requirements, which weakens their sustainable development capability. In summary, although these three observed variables serve as important indicators for measuring and fitting digital transformation in manufacturing enterprises to promote green, low-carbon development, they contribute to reducing carbon emissions and pollutant emissions to some extent in specific aspects, stages, or steps. However, given the practical realities of production, operation, and management in enterprises, certain deficiencies and limitations lead to the fitting results not supporting the original hypotheses.