High Power Microwave Amplifiers — Japan — A-588-005

A measure labeled AD/CVD means antidumping and countervailing duties. It may apply when the U.S. government determines that imported merchandise is sold at less than fair value (antidumping, or AD) or benefits from certain foreign-government subsidies (countervailing, or CVD). For “High Power Microwave Amplifiers,” the measure generally concerns whether the imported product falls within the official merchandise description, not merely whether the product has that name in a catalog.

This can affect manufacturers, distributors, and retailers importing covered amplifiers from the countries identified in the official measure. An importer may need to pay additional duties, provide accurate entry information, and maintain records supporting the product’s classification and origin. The normal Harmonized Tariff Schedule (HTSUS) classification and the AD/CVD scope are related but separate: an HTSUS number helps identify entries, while the written scope controls whether the merchandise is covered. When the technical features or scope are unclear, seek a customs broker or trade counsel’s advice.

What to check

• Read the official scope language and compare it with the amplifier’s specifications, design, components, power characteristics, and intended use.
• Confirm the country of origin and the exporting or producing company; AD/CVD coverage can depend on both the merchandise and the parties involved.
• Review the relevant HTSUS headings as an entry-screening tool, but do not rely on the tariff number alone to decide scope.
• Ask your customs broker to verify the applicable AD/CVD case information, cash-deposit instructions, entry-document requirements, and any certification requirements using current official sources.
• Keep product datasheets, bills of materials, purchase records, origin documents, and scope-analysis notes in case Customs or the administering agency requests support.