我与王志（Zhi Wang，音译）和朱坤福（Kunfu Zhu，音译）的研究发现，中国对美出口中有大约一半为增值产品，零部件来自韩国、日本、台湾、新加坡等其他经济体。
My research with Zhi Wang and Kunfu Zhu reveals that about half of Chinese exports to the US are value-added products manufactured with components from South Korea, Japan, Taiwan, Singapore, and other countries.