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U.S. Antidumping & Countervailing Duties
Information and Resources for U.S. Trade Remedy Laws and Ongoing Proceedings

Final Affirmative Determination in the Antidumping Duty Investigation of Monomers and Oligomers from Taiwan

Final Affirmative Determinations in the Antidumping Duty Investigation of Monomers and Oligomers from Taiwan

On January 29, 2026, the U.S. Department of Commerce (Commerce) announced its final affirmative determination in the antidumping duty (AD) investigation of monomers and oligomers from Taiwan

Final Dumping Margins

Taiwan

Exporter/Producer Weighted-Average Dumping Margin (percent)
Eternal Materials Co., Ltd130.23*
Qualipoly Chemical Corporation130.23*
Snyth-Edge Advanced Material Co., Ltd130.23*
All Others130.23

* Rate based on facts available with adverse inferences.

Import Statistics

Taiwan202220232024
Volume (KG)40,137,91232,676,56428,931,989
Value (USD)$204,195,026$97,705,543$79,384,212

Source: U.S. Census Bureau, accessed through S&P Global Trade Atlas (Harmonized Tariff Schedule of the United States (HTSUS) subheadings 2916.12.5050, 2916.14.2050, 3824.99.2900, 3907.29.0000 and 3907.30.0000). Imports of certain monomers and oligomers enter under HTSUS subheadings that may cover subject and non-subject merchandise.

Next Steps 

  • The International Trade Commission (ITC) is running a concurrent injury determination. For more information related to the ITC’s timeline, please refer to the ITC’s calendar.

Other Case Information

  • The petitioner is Arkema, Inc. (King of Prussia, PA).
  • For general information and next steps, please refer to a list of FAQs for the final determination.
  • Additional case information, including the scope of the investigations, is on file electronically via Enforcement and Compliance’s Antidumping and Countervailing Duty Centralized Electronic Service System (ACCESS). Once you log in, please refer to case number: A-583-879.
  • To date, Commerce maintains 808 AD and CVD orders that provide relief to American companies and industries impacted by unfair trade.

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