China opens anti-dumping probe into EU, Japanese rubber chemical

China's Ministry of Commerce has opened an anti-dumping investigation into imports of ethylidene norbornene, a monomer used in EPDM rubber, from the European Union and Japan, acting on an application from Henghe Materials Technology on behalf of the Chinese industry.

Why it matters: The case adds a specialty chemical to Beijing's active trade remedy docket against both Brussels and Tokyo, and EU and Japanese exporters of the monomer now face a year-long investigation that could end in duties.

Data as of Ministry of Commerce of China, Announcement No. 56 of 2026, issued November 6, 2026 and read in full in Chinese in this run; the ministry is the source of record for its own trade remedy cases. Developing item.

China’s Ministry of Commerce said in Announcement No. 56 of 2026 that it opened an anti-dumping investigation on November 6 into imports of ethylidene norbornene originating in the European Union and Japan. The ministry said it received the application on October 9 from Henghe Materials Technology, acting for the Chinese ethylidene norbornene industry, and found after a preliminary review that the application met the standing and evidence requirements of China’s anti-dumping regulations.

Ethylidene norbornene, also written 5-ethylidene-2-norbornene, is a reactive monomer used mainly as the third monomer in EPDM synthetic rubber, and falls under tariff code 29021990. The dumping investigation period is July 1, 2025 to June 30, 2026, and the industry injury period is January 1, 2023 to June 30, 2026; interested parties have 20 days from the announcement to register, and the ministry said the investigation should normally conclude by November 6, 2027, with a possible six month extension.

China opens anti-dumping probe into EU, Japanese rubber chemical

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