摘要
Based on the product-country level trade data from 2004 to 2017,as well as the High-Tech Products Catalog from the US Census Bureau,this paper examines empirically the current phenomenon of"national concentration"in high-tech exports.The results show that the phenomenon of"national concentration"not only exists but also tends to be self-reinforcing.Compared with other products,the exports of high-tech products tend to be concentrated in certain countries,and this concentration trends were further strengthened after the global financial crisis of2008-2009.The national concentration of R&D activities may be one of the important causes of the national concentration of high-tech products.This pattern remains robust when we further use the value-added export data and different definitions of high-tech products.We argue that the phenomenon of"national concentration"of high-tech exports may herald the arrival of the"Second Great Divergence"-the divergence between innovative and manufacturing activities-in the global economy.
基金
support from the Center for International Finance and Economic Research,Tsinghua University.Bing Lu acknowledges financial support from the National Natural Science Foundation of China(No.72203023)
the Fundamental Research Funds for the Central Universities(No.202 INTSS12)
Xinding Yu acknowledges financial support from the National Natural Science Foundation of China(No.72173021).
