Does Digital Service Trade Openness Improve Export Product Quality of China's Manufacturing Enterprises?
（School of Economics and Trade，Guangdong University of Finance，Guangzhou 510521，Guangdong，China）
Abstract：Digital service trade is a new type of trade characterized by digitalization and intelligence；it plays an important role in innovating pattern of resource allocation and leading industrial transformation and upgrading ；and it becomes the key for the success of China's high- quality export development. Based on China's customs product level transaction data from 2000 to 2020 (except 2016)，the role of digital service trade openness in improving export product quality is analyzed with a dynamic effect test model. It is found that：the openness of digital service trade improves the quality of export products ；and the degree of improvement is related to the region，that is，the improving role of digital service trade openness will be strengthened in regions with more open economy and more perfect system. In addition，the test of dynamic effect shows that the improving effect of digital service trade openness on export quality demonstrates the dynamic feature of spiraling upward. The empirical test of influence channels shows that vertical specialization level of enterprises regulates the effect of digital service trade opening on the quality of export products through category diversification effect and low- cost effect. To promote the quality improvement of export products of manufacturing enterprises，we should，first，improve the macro and micro environment of digital service trade openness，and eliminate policy differences in tax and other aspects of enterprises with different ownership ；second，we should Increase the import of high-quality digital services，attach importance to original digital technology innovation，and promote the export of superior digital services；and third，we should connect domestic circulation with international circulation，reduce the barriers to entry and exit of digital elements，and improve the flexibility of digital resources matching.
Key words：digital service trade openness；export product quality；vertical specialization level