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Certain Monomers and Oligomers From the Republic of Korea: Antidumping Duty Order

Detected July 28, 2026 · in Small Cross-Border Importers

The U.S. issued an antidumping duty order on certain monomers and oligomers from South Korea, imposing additional duties on imports of these products.

Aforeworn detected this change in the Small Cross-Border Importers space on July 28, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated High urgency. Importers of monomers and oligomers from South Korea, including those sourcing for adhesives, coatings, and plastics. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Immediately for new entries; entries already in transit may be subject to the order upon entry.. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors Small Cross-Border Importers continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.

What changed

An antidumping duty order is now in effect, requiring cash deposits at the applicable AD rate for entries of subject merchandise.

Who it affects

Importers of monomers and oligomers from South Korea, including those sourcing for adhesives, coatings, and plastics.

What you must do

Review product classifications and supply chains to determine if imported goods are covered; ensure correct AD rate is applied and cash deposits are made.

Deadline

Immediately for new entries; entries already in transit may be subject to the order upon entry.

Source: https://www.federalregister.gov/documents/2026/07/28/2026-15220/certain-monomers-and-oligomers-from-the-republic-of-korea-antidumping-duty-order

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