Calcium Hypochlorite — China — A-570-008

An AD/CVD measure is a U.S. trade-remedy measure. “AD” means antidumping: it addresses imports sold at less than fair value. “CVD” means countervailing duty: it addresses imports that benefit from government subsidies. A measure titled “Calcium Hypochlorite” generally concerns covered forms of that chemical, but the official scope description—not the product title alone—controls whether an import is included.

These measures typically affect U.S. importers, foreign producers and exporters, and sometimes related parties involved in the supply chain. They matter because an importer may owe additional duties beyond ordinary customs duty, may need to provide accurate producer and exporter information, and can remain responsible for duties even when a supplier or broker handles the entry. The tariff classification (HTSUS subheading) can help identify potentially relevant goods, but it does not by itself determine scope. Scope interpretation or liability questions may require a customs broker or trade-remedy professional.

What to check

• Read the official AD/CVD scope language and compare it with the product’s chemical composition, physical form, packaging, and intended use; do not rely only on the product name.
• Confirm the correct HTSUS classification, country of origin, manufacturer, exporter, and any related-party information before entry.
• Ask the supplier for complete product specifications and identify every producer and exporter in the transaction, because rates or treatment can depend on those parties.
• Have your customs broker check the applicable entry instructions, deposit requirements, exclusions, and documentation before importing.
• Keep purchase records, technical documents, certificates, and communications supporting the scope and origin analysis in case Customs or the administering agency reviews the entry.