U.S. Finalizes Antidumping Duty Order on Certain Monomers and Oligomers from South Korea
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The U.S. Department of Commerce has finalized an antidumping duty order on certain monomers and oligomers from South Korea. This decision comes after the International Trade Commission confirmed that U.S. industries were harmed by imports sold at unfairly low prices.
The order took effect on July 28, 2026. It affects imports from South Korea of specific monomers and oligomers, including those used in making inks, coatings, and varnishes. The purpose is to stop them from being sold at less than fair value in the United States.
The Department of Commerce will instruct U.S. Customs and Border Protection to assess duties on these products. These duties are the difference between their normal value and the price they were sold for here.
Monomers and oligomers from South Korea will be taxed at rates between 65.72% and 155.42%, depending on the company. Some companies face higher rates due to a lack of cooperation in the investigation.
The suspension of liquidation means businesses must put up cash deposits when importing these products. These deposits equal the estimated dumping margins.
Suspension applies to entries made on or after January 5, 2026. For earlier entries, suspension lifted from October 7, 2025, to January 4, 2026, for which duties will be refunded.
A new “annual inquiry service list” will allow interested parties to stay informed. Law firms and businesses must submit entries of appearance to be added.
The Department of Commerce will update the list annually. The initial update occurs within 30 days after the order is published.
This order aims to protect U.S. businesses from unfair competition and secure a level playing field. The detailed list of materials affected is available through the official register.
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