hs change Published 2026-04-24

Tris (Hydroxymethyl) Aminomethane and Tris (Hydroxymethyl) Aminomethane Hydrochloride (“Tris and Tris HCI”) From China; Institution of Antidumping and Countervailing Duty Investigations and Scheduling of Preliminary Phase Investigations

Origins: CN

📌 ETDETA brief — importer impact summary (educational)

Brief takeaway: The ITC has begun preliminary antidumping and countervailing duty investigations into Tris and Tris HCl from China, which could eventually lead to added duties on these imports.

What changed: According to the notice, the Commission instituted preliminary phase AD/CVD investigations (Nos. 701-TA-793 and 731-TA-1789) to determine whether a U.S. industry is materially injured or threatened by imports of Tris and Tris HCl from China alleged to be sold at less than fair value and subsidized by the Government of China. The notice states the Commission must reach a preliminary determination by June 5, 2026, with views transmitted to Commerce by June 12, 2026.

Who's affected: The notice names Tris(hydroxymethyl)aminomethane and Tris(hydroxymethyl)aminomethane hydrochloride ("Tris and Tris HCl"), cites HTS subheading 2922.19.96, and identifies China as the country of origin.

What to review:
- Review whether products you import fall under the described Tris and Tris HCl or the cited subheading 2922.19.96.
- Confirm the country of origin of your goods with your customs broker, since the notice targets China.
- Check the noted preliminary timeline dates and monitor for any subsequent Commerce or ITC determinations.
- Confirm with your broker how a potential AD/CVD case may affect duty exposure or entry reporting.

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

Official notice

The Commission hereby gives notice of the institution of investigations and commencement of preliminary phase antidumping and countervailing duty investigation Nos. 701-TA-793 and 731-TA-1789 (Preliminary) pursuant to the Tariff Act of 1930 to determine whether there is a reasonable indication that an industry in the United States is materially injured or threatened with material injury, or the establishment of an industry in the United States is materially retarded, by reason of imports of Tris(hydroxymethyl)aminomethane and Tris(hydroxymethyl)aminomethane hydrochloride ("Tris and Tris HCl") from China, provided for in subheading 2922.19.96 of the Harmonized Tariff Schedule of the United States, that are alleged to be sold in the United States at less than fair value and alleged to be subsidized by the Government of China. Unless the Department of Commerce ("Commerce") extends the time for initiation, the Commission must reach a preliminary determination in antidumping and countervailing duty investigations in 45 days, or in this case by June 5, 2026. The Commission's views must be transmitted to Commerce within five business days thereafter, or by June 12, 2026.

Source: Federal Register · International Trade Commission · Read the official notice ↗

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This update is a general educational summary based on public CBP CSMS / Federal Register information. It is not legal advice, customs broker advice, a final classification, duty determination, entry instruction, or compliance determination. Importers should confirm applicability, effective dates, HTSUS/Chapter 99 reporting, rates, refunds, PSC procedures, and filing instructions with their licensed customs broker, trade counsel, and/or CBP.