Methylene Diphenyl Diisocyanate — China — A-570-200

An AD/CVD measure concerning Methylene Diphenyl Diisocyanate (MDI) is a U.S. trade remedy that may apply to covered imports of this chemical. “AD” means antidumping duty, generally addressing imports sold in the United States at less than normal value. “CVD” means countervailing duty, generally addressing imports that benefit from certain foreign-government subsidies. These duties are separate from ordinary customs duty and may apply in addition to it.

The measure typically affects importers, manufacturers, distributors, and downstream businesses bringing covered MDI products into the United States from specified countries or suppliers. Coverage depends on the official product description and tariff classification—not just the product’s commercial name. An importer may be responsible for declaring the correct classification, reporting the relevant country of origin and exporter or producer, and paying any applicable additional duties. Because scope and liability can be technical, confirm difficult cases with official agency sources or a qualified customs professional.

What to check

• Read the official scope language and compare it with the product’s chemical composition, form, grade, and intended use; do not rely on the product name alone.
• Verify the HTSUS classification, country of origin, exporter, and producer against the measure’s coverage requirements.
• Check whether the shipment is subject to AD, CVD, both, or neither, and distinguish trade-remedy duties from ordinary customs duty.
• Confirm entry and documentation requirements with CBP instructions and the relevant Commerce Department case information before filing.
• Keep product specifications, purchase records, origin evidence, and supplier certifications that support the classification and scope decision.