CHINA announced today new anti-dumping duties on imports of nylon6 from the markets of the United States, the European Union, Russia and Taiwan in a final ruling.

Nylon6, or polycaprolactam and polyamide-6, is used in production of chemical fibers, textiles, vehicles, food and many health care products.

"The four markets dumped the product and caused substantial damage to the domestic industry," the Ministry of Commerce said yesterday. It did not provide detailed rates of the duties, which vary for the four markets.

The final ruling came nearly one year after the ministry started the investigation on April 29 last year, when seven Chinese companies filed a request.

This month China saw a new bunch of trade disputes. The US said on Wednesday that it initiated an anti-dumping and anti-subsidy investigation into Chinese aluminum extrusions, after the EU decided last Saturday to begin a countervailing probe into China's exports of coated paper.