Tris(hydroxymethyl)aminomethane — China — A-570-230

A US AD/CVD measure concerning Tris(hydroxymethyl)aminomethane addresses imports of a particular chemical product, often identified by its chemical name, physical characteristics, composition, and intended scope. “AD” means antidumping: it applies when merchandise is sold in the United States at less than fair value. “CVD” means countervailing duty: it addresses certain foreign-government subsidies. These are trade-remedy duties, separate from ordinary customs duty and other import charges.

The measure typically affects US importers, manufacturers, distributors, and other parties bringing the covered merchandise into the United States from the specified countries. Product coverage is determined by the official scope language, not just the product name or HTSUS classification. An importer may have responsibility for declaring the correct classification, identifying the country of origin, and paying applicable duties; the customs broker can assist, but the importer remains responsible for accurate entry information. Confirming whether a chemical is covered may require technical review by a customs broker, trade attorney, or other qualified professional.

What to check

• Read the official scope language and compare the product’s chemical identity, purity, formulation, physical form, and packaging—not just its commercial name.
• Verify the listed countries of manufacture or export and determine the product’s country of origin under the applicable rules.
• Check the applicable HTSUS classification, but do not treat the tariff number alone as proof that the merchandise is inside or outside the scope.
• Ask your customs broker or trade counsel whether an AD/CVD case-specific cash-deposit, reporting, certification, or exclusion requirement applies to the planned entry.
• Keep product specifications, safety or technical data, invoices, origin records, and supplier statements that support the classification and scope determination.