本文根据Hallak提出的产品质量影响双边贸易方向的质量模型，构建基于单位价值、国家之间距离和人均收入等变量的出口产品质量实证模型，测度了2003—2013年中国、印度和巴西三个发展中国家出口到美国的HS6位码的产品质量，并对中国、印度和巴西制造业的产品质量和质量升级进行比较研究，据此提出中国出口产品质量升级的政策建议。

Based on the Hallak Product Quality model, we construct an empirical product quality model adopting unit value, distance between countries, income per capita. This research measures Chinese, Indian and Brazilian manufacturing quality of HS6 products that export to the U.S., from 2003 to 2013. And we put forward policy recommendations to improve China’s product quality upgrading ability in the international market.