"Up to now, Chinese and U.S. officials have not held any negotiations on the trade dispute," foreign ministry spokesman Geng Shuang said.
Research underway at Texas State University is contributing to the region's innovation focus.
The U.S. proposal would distinguish between different NAFTA car parts by grouping them into five categories, some of which would have a lower requirement for North American content .
The U.S. list of planned charges on more than 1,300 product categories focused on China’s industrial machinery and technology exports.
China said Sunday the metals tariffs imposed by the U.S. “caused serious damage” to its interests.
The preliminary step could lead to a dispute between the two nations at the World Trade Organization.