Sodium Thiosulfate — China — A-570-805

A measure titled “Sodium Thiosulfate” and marked AD/CVD concerns possible trade-remedy duties on covered imports of that chemical. “AD” means antidumping: the government may impose duties when imports are sold in the US at less than fair value and cause or threaten injury to a US industry. “CVD” means countervailing duty: the government may impose duties to offset certain foreign-government subsidies that benefit the exported product. These duties are separate from ordinary customs duty.

The measure typically affects importers, manufacturers, distributors, and other businesses bringing the covered sodium thiosulfate product into the United States from specified countries or exporters. Coverage depends on the legal product description, country of origin, exporter or producer, and any exclusions—not merely the product’s trade name or tariff classification. An importer may need to pay cash deposits at entry and later face a final duty assessment, so the importer of record should review the official scope and coordinate with a customs broker or trade-remedy specialist.

What to check

• Read the official scope language and compare the product’s chemical form, concentration, packaging, and intended use; do not rely on the product name alone.
• Confirm the product’s country of origin and identify the foreign producer and exporter, because AD/CVD treatment can vary by country and company.
• Check the applicable HTSUS classification as a reporting tool, but remember that the written measure scope controls if it differs from the tariff number.
• Ask your customs broker to verify the required AD/CVD case information, entry procedures, cash-deposit requirements, and any certification or exclusion rules.
• Keep purchase orders, invoices, production records, origin documents, and product specifications that support the classification, scope determination, and declared parties.