PTMEG anti-dumping investigation corrects HS codes

Investigation Scope Corrected

On May 14, 2026, the U.S. Department of Commerce published a correction to its May 5, 2026 notice initiating less-than-fair-value investigations on polytetramethylene ether glycol (PTMEG). According to Commerce, "This notice corrects a typographical error with respect to the Harmonized Tariff Schedule of the United States (HTSUS) subheadings in the scope of the investigations."

PTMEG is a specialty chemical used in polyurethane production, textiles, adhesives, and elastomers. The original notice initiated concurrent LTFV investigations into PTMEG imports from four countries: the People's Republic of China, the Republic of Korea, Taiwan, and the Socialist Republic of Vietnam.

Who Is Affected

Importers, distributors, and manufacturers sourcing PTMEG from China, Korea, Taiwan, or Vietnam face potential tariff exposure. Once final anti-dumping duties are determined—typically 14–20 months after initiation—subject shipments will incur additional landed costs.

The correction to HTSUS subheadings is critical: it defines precisely which tariff classifications fall within the investigation scope. Shippers must verify their PTMEG merchandise against the corrected codes to understand duty-rate exposure and whether their suppliers face provisional duties during the investigation period.

What this means for shippers

If you import PTMEG or products containing PTMEG from China, Korea, Taiwan, or Vietnam, obtain the corrected HTSUS subheadings from the May 14, 2026 Federal Register notice immediately and confirm your merchandise classification against those codes. Provisional anti-dumping duties may be assessed retroactively to the investigation initiation date; secure landed-cost estimates now to model worst-case tariff scenarios. Review supplier country-of-origin documentation to confirm exposure. /hs-codes/search