U.S. Department of Commerce Finds Dumping of Korean Fiber
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April 17, 2026
The U.S. Department of Commerce has concluded an investigation into imports of low melt polyester staple fiber from the Republic of Korea. This inquiry was focused on the period from August 1, 2023, to July 31, 2024.
The findings indicate that Toray Advanced Materials Korea, Inc. (TAK) sold this type of fiber at prices lower than its regular value in the U.S. market. This activity is known as dumping.
The department determined that the margin by which the fiber was sold below normal value was 3.02 percent. A margin tells us the extent to which the price was cut.
This decision follows a preliminary finding issued in February 2026. During the review process, TAK submitted comments on the initial results. However, the Commerce Department did not make any changes to the final calculations from the preliminary findings.
The original investigation into this type of fiber began with an antidumping order in August 2018. This order targets synthetic staple fibers that melt at low temperatures, specifically designed for certain manufacturing uses. The review was delayed due to government shutdowns and document backlogs last year.
U.S. Customs and Border Protection (CBP) will assess and apply the appropriate duties to shipments covered by this review. The duties are designed to bring the import prices closer to the usual market values and protect American producers from unfair foreign pricing.
The department has also outlined the new cash deposit requirements. These deposits are a form of security for future imports and must be made for all new shipments entering the U.S. They vary depending on whether the producer or exporter was covered in this or previous reviews.
Importers are reminded of their responsibility to certify that no antidumping duties have been reimbursed, which could lead to penalty duties if not complied with.
This action is part of continued efforts by the U.S. government to enforce fair trade and ensure a level playing field for domestic industries.
This notice was signed and dated April 13, 2026, by Christopher Abbott, the Deputy Assistant Secretary for Policy and Negotiations at the Department of Commerce.
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