1-Hydroxyethylidene-1, 1-Diphosphonic Acid (HEDP) — China — A-570-934

A U.S. AD/CVD measure involving 1-Hydroxyethylidene-1,1-Diphosphonic Acid (HEDP) is a trade remedy that may apply to covered HEDP products from specified countries or exporters. “AD” means antidumping, addressing imports sold at less than fair value. “CVD” means countervailing duty, addressing benefits or subsidies provided by a foreign government. These measures are separate from ordinary customs duty and may require additional deposits at entry.

The measure typically matters to importers, customs brokers, manufacturers, distributors, and other parties bringing the covered chemical into the United States. Coverage is determined primarily by the legal product description—such as the chemical’s composition, form, and use—and the listed country of origin and exporter or producer, not by a product name alone. A Harmonized Tariff Schedule (HTS) number can help identify entries, but it generally does not control the scope by itself. Importers should verify the official scope and any applicable instructions before entry.

What to check

• Compare the product’s composition, physical form, packaging, and intended use with the official scope language; do not rely only on the commercial name “HEDP.”
• Confirm the country of origin and identify the actual producer and exporter, including whether any manufacturing or repackaging changes origin or coverage.
• Review the relevant HTS classifications as an entry-screening tool, but treat the written scope and official customs instructions as controlling for review purposes.
• Ask your customs broker or trade counsel to confirm whether an AD/CVD entry, cash-deposit requirement, certification, or special entry reporting applies.
• Keep purchase records, specifications, certificates of analysis, origin documents, and producer/exporter information so the classification and scope decision can be supported.