关键词: 进口中间产品质量, GEKS 指数, 制造业工资, 全球冲击波 ,

Abstract: This paper studies the wage stagnation phenomenon of the global manufacturing sectors from the perspective of rapid growth of intermediate product trade and its quality First，this paper reconstructs the wagedetermination model under open condition based on the DS monopolistic competition framework and the research of Koch & Smolka（2019)，and finds that the quality of imported intermediate product affects the fluctuation of wages in all countries Second，based on the research of Feenstra & Romalis（2014)，this paper constructs a new GEKS index to measure the quality of imported intermediate product at the level of productindustrycountry or region，and then uses the CEPIIBACI（HS92）trade database to estimate the quality of the intermediate product in SITC_Rev2 fourdigit manufacturing industries quality imported from 248 export markets in 37 countries during 19952011 It shows that the quality of imported intermediate product in the global manufacturing sectors has an obvious rising trend，but the differentiation is serious It rises in the middle and lowincome economic entities and declines in the highincome economic entities Finally，this paper quantitatively identifies the specific impact of the quality of imported intermediate product on manufacturing wages in importing countries or regions at the transnational or regionindustry level The findings are as follows：（1）The quality of imported intermediate product has a significant and negative effect on global manufacturing wages，and the reduction effect is the greatest in middle income economic entities，middle technology intensive industries，high skilled labor forces and the importing minerals industries（2）The quality of the imported intermediate product reduces the global manufacturing wages through two mechanisms，employment destruction effect and R&D incentive effect（3）The effect of the quality change of imported intermediate product on manufacturing wages is a market law and a temporary “global shock” These findings explain the puzzle of wage stagnation in the global manufacturing sectors and inspire countries to respect the laws of nature and market in the globalization，strengthen international cooperation，jointly cope with the impact of the external shock，improve peoples wellbeing，and jointly build a community with a shared future for mankind

Key words: quality of imported intermediate product, GEKS index, manufacturing wages, global shock