China Initiates Review of its Antidumping Duty Measure on Polyphenylene Sulfide from the United States, Japan, South Korea, and Malaysia
China Initiates Review of its Antidumping Duty Measure on Polyphenylene Sulfide from the United States, Japan, South Korea, and Malaysia
On November 30, 2025, China’s Trade Remedy Investigation Bureau (TRIB) initiated an expiry review of its antidumping (AD) measure on imports of polyphenylene sulfides (PPS) from the United States, Japan, South Korea, and Malaysia. China’s AD measure on PPS has been in place since November 30, 2020. The AD duties currently om place for U.S. producers/exporters range from 214.1%-220.9%.
What is an expiry review?
An expiry review is also known as a sunset review, and its purpose is to determine whether the revocation of the AD or countervailing measure would be likely to lead to the continuation or reoccurrence of dumping or unfair subsidization and material injury to the domestic industry. The measure may only be extended beyond five years, counting from the date on which a measure was first instituted or the most recently completed expiry review, if both conditions are met.
How can I participate?
U.S. companies involved in the production, sale, or distribution of the subject goods should register as interested parties as soon as possible. Registration is the first step in protecting your rights in a foreign trade remedy proceeding. Doing so allows you to access the case records and submit information and comments, ensuring that your views are considered. To register as an interested party, please see Section V of the Initiation Notice.
| KEY DATES | |
|---|---|
| Period of Investigation | January 1, 2024, through June 30, 2025 |
| Registration Deadline | December 20, 2025 |
| Initial Questionnaire Response Deadline* | February 7, 2026 |
| Preliminary Determination | TBA |
| Final Determination* | December 1, 2026 |
*Estimated
Product Under Review
The subject merchandise is polyphenylene sulfide (PPS), a thermoplastic resin used in fiber spinning, film making, coating, and other manufacturing processes to produce textiles, automobiles, electronics, machinery, petroleum, and other products. The merchandise under investigation is currently classified under Harmonized Tariff Scheule (HS) code: 3911.90.00.
A complete description of the scope can be found in Section III of the initiation notice.
Contact Us
The U.S. Department of Commerce’s Office of Trade Remedy Compliance supports U.S. companies facing foreign trade remedy proceedings (antidumping duty, countervailing duty, and safeguard actions) and ensures foreign governments comply with their international trade obligations. Should you have any questions, please contact TRCS@trade.gov. For more information, visit Office of Trade Remedy Compliance.