贸易开放、产品类型与企业出口产品质量升级

Trade Opening, Product Type and Quality Upgrading of Enterprises' Export Products

本文基于企业—产品—目的地—年份的微观数据,统计描述并实证检验了中间品进口关税下降、产品类型排序对企业出口产品质量的影响效应。研究结果表明:统计上,研究期间企业层面的中间品进口关税在持续下降,企业核心产品的出口占比在不断增加,与此同时企业出口产品质量也在逐年增加,尤其是核心产品;实证上,中间品进口关税的下降可以显著地促进企业出口产品质量的提升,且该促进作用在距离企业核心产品越近时,质量提升效应越大。在考虑内生性、变更衡量方式、增加控制变量及改变样本容量等多种稳健性检验后,该结论依然成立。异质性分析表明,贸易开放、产品类型对异质性产品、高定价产品的质量提升效应更明显。

Based on the highly-detailed micro data of enterprise-product-destinationyear, this paper described and empirically tested the effects of the import tariffs reduction for intermediate goods and the products, ranks on the quality of enterprises, export products. The research results show that the import tariffs reduction for intermediate goods can significantly promote the quality improvement of enterprises' export products, and the promotion effect is greater when the distance from the enterprises' core products is closer.The conclusions still hold when considering a series of robustness tests such as endogeneity, changing measurement method, adding control variables and changing sample size.The heterogeneity analysis shows that trade opening and product type have more obvious effects on the quality improvement of heterogeneous products and high-priced products.