Polytetramethylene Ether Glycol (PTMEG) From China, South Korea, Taiwan, and Vietnam; Institution of Antidumping Duty Investigations and Scheduling of Preliminary Phase Investigations

Brief takeaway: The ITC has begun preliminary antidumping investigations into PTMEG imports from four countries, an early step that could eventually lead to duties.

What changed: According to the notice, the Commission instituted preliminary phase antidumping duty investigations (Nos. 731-TA-1782-1785) to determine whether a U.S. industry is materially injured or threatened by PTMEG imports alleged to be sold at less than fair value. The notice states the Commission must reach a preliminary determination by May 26, 2026, with its views transmitted to Commerce by June 2, 2026.

Who's affected: The notice names polytetramethylene ether glycol (PTMEG) and cites HTS subheadings 3907.29.00 and 2932.11.00. It names China, South Korea, Taiwan, and Vietnam as the countries of origin under investigation.

What to review:
- Review whether your imported products are classified under HTS 3907.29.00 or 2932.11.00 and originate from any named country.
- Confirm with your broker whether the goods you import meet the scope description of PTMEG as framed in the notice.
- Check the noted procedural dates and any Commerce initiation timing that may affect later stages.
- Review your supply chain and sourcing records in case antidumping duties or deposit requirements arise later in the process.

This is general information, not legal advice and not a compliance determination — confirm specifics with a licensed customs broker or trade counsel.