USITC Affirmative Determinations on Antidumping and Countervailing Duty Investigations for MAMMOs from Taiwan

ITC News Releases

Filed February 11th, 2026

Detected February 11th, 2026

Summary

The USITC has made affirmative determinations that a U.S. industry is materially injured by imports of multifunctional acrylate and methacrylate monomers and oligomers (MAMMOs) from Taiwan sold at less than fair value and subsidized by the government. As a result, the Department of Commerce will issue antidumping and countervailing duty orders.

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What changed

The United States International Trade Commission (USITC) has issued final affirmative determinations in antidumping and countervailing duty investigations concerning Multifunctional Acrylate and Methacrylate Monomers and Oligomers (MAMMOs) from Taiwan. The Commission found that U.S. domestic industries are materially injured by these imports, which the Department of Commerce previously determined were sold at less than fair value and subsidized by the Taiwanese government. Consequently, the Department of Commerce will now issue antidumping and countervailing duty orders on these imports.

These affirmative determinations mean that antidumping and countervailing duties will be imposed on MAMMOs imported from Taiwan. Importers and exporters of these products, as well as domestic manufacturers, should prepare for the imposition of these duties. The USITC's public report, expected by March 30, 2026, will provide further details on the investigations and the Commission's findings. Companies involved in the trade of MAMMOs should review the implications of these duty orders on their supply chains and pricing strategies.

What to do next

Review USITC's final report on MAMMOs from Taiwan (expected by March 30, 2026).
Assess the impact of new antidumping and countervailing duties on import costs and supply chains.
Consult with legal counsel regarding compliance with new duty orders.

Penalties

Antidumping and countervailing duties will be imposed on imports of MAMMOs from Taiwan.

Source document (simplified)

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Multifunctional Acrylate and Methacrylate Monomers and Oligomers (MAMMOs) from Taiwan Injure U.S. Industry, Says USITC

February 11, 2026
News Release 26-022
Inv. No(s).

  701-TA-759 and 731-TA-1741 (Final)

Contact: Claire Huber, 202-205-1819 Multifunctional Acrylate and Methacrylate Monomers and Oligomers (MAMMOs) from Taiwan Injure U.S. Industry, Says USITC

The United States International Trade Commission (Commission or USITC) today determined that a U.S. industry is materially injured by reason of imports of multifunctional acrylate and methacrylate monomers and oligomers (MAMMOs) from Taiwan that the U.S. Department of Commerce (Commerce) has determined are sold at less than fair value and subsidized by the government of Taiwan.

Chair Amy A. Karpel and Commissioners David S. Johanson and Jason E. Kearns voted in the affirmative.

As a result of the Commission’s affirmative determinations, Commerce will issue an antidumping duty order and a countervailing duty order on imports of this product from Taiwan.

The Commission also made negative critical circumstances determinations with respect to subject imports from Taiwan for which Commerce has made final affirmative critical circumstances findings in the antidumping and countervailing duty investigations.

The Commission’s public report on Multifunctional Acrylate and Methacrylate Monomers and Oligomers (MAMMOs) from Taiwan (Inv. No. 701-TA-759 and 731-TA-1741 (Final), USITC Publication 5707, March 2026) will contain the views of the Commission and information developed during the investigations.

The report will be available by March 30, 2026; when available, it may be accessed on the USITC website.

Status of proceedings, links to relevant documents, and more information about the investigations can be found at the Commission’s Investigations Database System (IDS).