China slaps anti-dumping duties on plastics from U.S., EU, Japan, Taiwan

China imposes high anti-dumping duties on POM copolymers from U.S., EU, Japan, and Taiwan amid trade tensions.

China on Sunday (May 18, 2025) announced anti-dumping duties as high as 74.9% on imports of POM copolymers, a type of engineering plastic, from the United States, the European Union, Japan and Taiwan.

The Commerce Ministry's findings conclude a probe launched in May 2024, shortly after the U.S. sharply increased tariffs on Chinese electric vehicles, computer chips and other imports.

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POM copolymers can partially replace metals such as copper and zinc and have various applications including in auto parts, electronics and medical equipment, the ministry has said.

In January the Ministry said initial investigations had determined that dumping was taking place, and implemented preliminary anti-dumping measures in the form of a deposit starting from January 24.

According to Sunday's announcement, the highest anti-dumping rates of 74.9% were levied on imports from the United States, while European shipments will face 34.5% duties.

China slapped 35.5% duties on Japanese imports, except for Asahi Kasei Corp, which received a company-specific rate of 24.5%.