Since the reform and opening up,along with the continuous improvement of opening up level,trade of our country realizes "explosive" growth,which has become first major trading country in the world.However,"big but not strong","low quality and low price" and "made in China" have become the typical features of China’s exports.In recent years,as the global economy continues to slump,the developed countries,mainly the United States,set off a wave of reverse globalization.Developed countries have imposed technology blockade on China,meanwhile,the comparative advantage of traditional low-cost labor have weakened.The outbreak of COVID-19 has further worsened China’s export situation at home and abroad.Therefore,how to promote the quality upgrade of Chinese export products,get rid of the traditional low-end lock mode of the value chain,and improve the benefit ability of Chinese export firms has become an important issue in the current stage.In fact,one of the key issues to boost the domestic economy is to improve the quality of the supply system and expand effective supply and medium-and high-end supply.The construction of a perfect domestic value chain division system is equal to improve the quality of the domestic economy supply network.It can be seen that the construction and cultivation of domestic value chain can promote opening to the domestic market,and then promote the division of labor and cooperation among provinces.It will help promote the formation of smooth domestic economic cycle,attract global resource factors,foster advanced factor conditions,improve the development level of China’s industrial technology and finally form new advantages in participating in international economic cooperation and competition.Therefore,this study seek an effective path to build a trade power relying on the domestic market and resources.This study can not only provide reference for the positive interaction of the domestic economic circle supply system and the international economic circle,but also can contribute to the realization of economic transformation and upgrading and high-quality development.There are six chapters in this paper.The first chapter is our introduction,which introduces the research background and significance of the problem and conducts a systematic review and sorting of relevant studies.On this basis,we put forward the research content,innovation points and shortcomings of this paper.The second chapter defines the concept and boundary of the domestic value chain in this paper.And then it calculates and analyzes the participation and length of the domestic value chain at the region-industry level with the help of the world input-output table and the interregional input-output table.We describe the current situation and characteristics of the division of labor in the domestic value chain.The main contents of the third chapter to the fifth chapter are the core chapters of this paper,which examine the impact of domestic value chain division of labor on manufacturing firms’ exports in terms of "quantity","quality" and "benefit".Specifically,the third chapter examines the impact of domestic value chain embedding on the export scale of manufacturing firms.Firstly,it analyzes the promoting and inhibiting effects of domestic value chain embedding on the export scale of manufacturing firms from the theoretical level and proposes a research hypothesis,and then we use the data of domestic value chain participation and the export scale of firms to initially fit the relationship graph between the them.Finally,finally we use the econometric method to carry out an empirical test.After examining "quantity",the fourth chapter focuses on the impact of domestic value chain division of labor on export product quality from the perspective of "quality".This chapter uses mathematical models and literature extrapolation to analyze the theoretical channels.Also we analyze the impact of the unified domestic market on the relationship between them.On this basis,the matching data of China’s industrial firm database and China’s Customs database are used to measure the quality of firms’ export products.And then we use the fixed-effect approach to empirically examine the impact of domestic value chain length on firms’ export product quality,as well as the heterogeneous effects in terms of region,financing constraints,industry and product quality.Also we examine the interactive effect of the division of labor between global and domestic value chains on the quality of firms’ export products.Finally,in the extended analysis section,this chapter also examines the moderating effect of the national unified market on the impact between them.After examining "quantity" and "quality" of export,the fifth chapter systematically examines the impact of domestic value chain division of labor on exporters’ ability to obtain benefit from it.The chapter firstly analyzes how domestic value chain embedding affects exporters’ markup in terms of cost channel and innovation channel and then measures firms’ markup.On this basis,the relationship between them is tested at the empirical level.Also we discuss the interactive effect of dual value chain embedding on firms’ markup.Similarly,we investigate the moderating effect of external market environment on the impact of domestic value chain embedding on firms’ markup in the extended analysis section.The sixth chapter is the conclusion and policy recommendation,which summarizes the conclusions of the article based on the characteristic facts and empirical analysis in the previous sections.And accordingly we propose practical policy recommendations.Based on the theoretical analysis and empirical tests,the conclusions of this paper are as follows.(1)Participating in both domestic value chain and global value chain had increased in most provinces during the sample period.From the perspective of industry,participating in the domestic value chain of the food manufacturing industry in most provinces is higher than that in the global value chain;the domestic division of labor in the transportation equipment manufacturing industry in all provinces is close to that in the international division of labor.And the participating in the global value chain of the communication equipment and computer electronics industry is significantly higher than that in the domestic value chain.In addition,the backward total production length is higher than the forward total production length in most provinces,among which Shandong Province has the highest forward and backward total production length.In addition,the length of domestic value chain in most provinces is higher than that of global value chain from the forward and backward perspective.From the perspective of industry,the length of the domestic value chain of the food manufacturing industry is higher than that of the global value chain,and the transportation equipment manufacturing industry is in a relatively low position in both the domestic value chain and the global value chain division system.(2)There is a U-shaped relationship between domestic value chain embedding and export scale of manufacturing firms.When the domestic value chain participation exceeds a certain threshold,the promotion effect of domestic value chain embedding on export scale is higher than the inhibition effect.So participating in domestic value chain division of labor can become a new source of comparative advantage for export.And the U-shaped relationship is still valid after a series of robustness tests.This conclusion is characterized by heterogeneity.Domestic value chain embedding has a significant U-shaped effect on the export scale of firms in the eastern and central regions and firms with low financing constraints,but there is no significant effect on the export scale of firms in the western region and firms with high financing constraints.Compared with low productivity firms,domestic value chain embedding shows a earlier promotion effect on the export scale of high productivity firms(3)Extending domestic value chain has a significant promoting effect on firm’s export products quality.The results of the impact mechanism show that domestic value chain cultivation can improve firm’s export products quality by improving the efficiency of fixed asset investment and productivity.The results of heterogeneity analysis show that extending domestic value chain has a stronger promotion effect on firm’s export products quality in the eastern region,firms of technology-intensive industries and firms with lower financial constraints.In addition,global value chains and domestic value chains are alternative rather than complementary in promoting firm’s export products quality.The extending analysis results show that the unified large domestic market can significantly enhance the promoting effect of domestic value chain extending on the upgrading of export products of manufacturing firms.The current division of global value chain and domestic value chain are mutually alternative rather than complementary to firm’s export products quality.(4)Domestic value chain embedding has a significant promoting effect on export firm’s markup.The results of the impact mechanism show that domestic value chain embedding can improve firm’s export products quality by reducing production costs and promoting technological innovation channels.The results of heterogeneity analysis show that domestic value chain embedding has a stronger promotion effect on export firm’s markup in the eastern region and high-tech firms.From the perspective of firms’ trade mode,the promotion effect of domestic value chain embedding on the general trade firms’ markup is higher than that of processing trade firms.From the perspective of firms’ scale,the promotion effect of domestic value chain embedding on the export firms markup decreases with the increase of firms’ scale.In addition,global value chains and domestic value chains are alternative rather than complementary in promoting firm’s export products quality.The extending analysis results show that the unified large domestic market can significantly enhance the promoting effect of domestic value chain extending on the upgrading of export products of manufacturing firms.The current division of global value chain and domestic value chain are mutually alternative rather than complementary to the quality of export products of firms.Based on the above research findings,the last chapter gives specific and feasible suggestions on how to build a strong trade power based on the national economical circle under the "dual circulation" development pattern.This study believes that,first of all,we should attach importance to the integration and utilization of domestic resources,comprehensively plan and adjust regional development strategies,enhance the supporting capacity of domestic industries,fully invigorate the domestic market and promote the development of domestic value chain division system.We should make full use of the gradient development difference between eastern and western regions and form a reasonable geographical division of labor pattern of domestic value chain,which can provide the foundation for inter-regional development.In addition,the central and western regions should accelerate the pace of reform.They should focus on solving institutional and mechanical barriers to avoid the siphoning effect of the eastern regions on the central and western regions.In this way,they can improve the participation and status of the domestic value chain and give full play to the positive spillover effect of the domestic value chain.Second,the government should give strong support to the hidden champion enterprises in various key technology areas and reduce the dependence on foreign supply chains.Third,the government should accelerate the reform of the financial supply-side system,optimize the investment and financing environment,reduce the cost of financing for private enterprises and small and medium-sized enterprises and stimulate the internal motivation of enterprises to improve product quality and mark-up rate.Fourth,the government should accelerate the construction of a unified national market.In this way,the market can play a decisive role in the allocation of resources,promote the free flow of goods and factors between regions,give full play to the positive role of the external market environment on the competitiveness of enterprise trade and ultimately achieve the effective allocation of resources.Finally,we need to coordinate the relationship between the domestic value chain and the global value chain.That is to say,we must break the traditional binary production pattern and merge them into a unified production network.We will build a new pattern of opening-up that integrates both internal and external efforts and form a benign complementary rather than alternative relationship. |