Lysine — China — A-570-215

An AD/CVD measure on lysine refers to trade-remedy duties. “AD” means antidumping duties, which address imports sold at less than comparable normal value. “CVD” means countervailing duties, which address benefits from government subsidies. These duties are separate from ordinary customs duty and may apply in addition to it.

The measure typically affects US importers of lysine products that fall within the official product scope and come from listed countries, producers, or exporters. The importer of record may be responsible for entry documentation, cash deposits, and later duty liability. Coverage depends on the product’s technical characteristics and origin—not just its commercial name or tariff classification—so a customs broker or trade specialist may need to review close cases.

What to check

• Read the official scope language and compare it with the product’s formulation, physical form, concentration, packaging, and intended use.
• Confirm the product’s country of origin and identify the actual manufacturer, producer, exporter, and seller in the transaction.
• Check the applicable HTS classification, but do not treat the tariff number alone as proof that the product is covered or excluded.
• Verify whether separate AD and CVD requirements apply, including any required cash-deposit instructions and importer certifications.
• Keep product specifications, invoices, origin records, supplier statements, and classification analysis in case Customs or the administering agency requests support.