US initiates countervailing duty probe on Chinese tin mill products
The U.S. Department of Commerce has initiated a countervailing duty (CVD) investigation into tin mill products from China, effective May 5, 2026. The investigation will examine whether Chinese producers receive countervailable subsidies that injure domestic U.S. industry. Tin mill products—flat-rolled steel with a tin coating used in packaging and other applications—are classified under HS chapters 72–73. Importers of affected merchandise should prepare for potential retroactive duties and increased landed costs pending the CVD determination.
Photo: JINGBO XIA / PexelsCountervailing Duty Investigation Launched on Chinese Tin Mill Products
The U.S. International Trade Commission and Department of Commerce have initiated a countervailing duty investigation into tin mill products originating from the People's Republic of China, according to a notice published in the Federal Register on May 5, 2026. The investigation will determine whether Chinese manufacturers of tin mill products benefit from countervailable subsidies that cause material injury to the U.S. domestic industry.
Scope and Products Covered
Tin mill products are flat-rolled steel products with a metallic tin coating, primarily used in food and beverage packaging, chemical containers, and other industrial applications. These products fall under HS Chapters 72 and 73 (iron and steel, and articles thereof). The CVD investigation will cover all tin mill products exported from China, regardless of end-use or customer type.
"The Department of Commerce has determined that there is a reasonable indication that countervailable subsidies are provided to producers and exporters of tin mill products in China," according to the Federal Register notice initiating the investigation.
The scope encompasses merchandise currently classifiable under the applicable harmonized tariff schedule codes covering tin mill products, and the investigation is conducted in accordance with Title VII of the Tariff Act of 1930.
Timeline and Next Steps
Importers and other interested parties will have specific deadlines to submit questionnaire responses and provide evidence regarding subsidy allegations. The Commerce Department will issue a preliminary determination within approximately 65–120 days, followed by a final determination. If countervailable subsidies are found, provisional duties may be assessed retroactively to the date of initiation.
Who Is Affected
Importers of tin mill products from China face immediate exposure: any shipments currently in transit or held in U.S. ports may be subject to retroactive duty assessments once a preliminary determination is issued. Producers, exporters, and Chinese government agencies that may have provided subsidies are required to respond to Department of Commerce questionnaires. U.S. domestic tin mill manufacturers and domestic industry representatives are eligible to participate in the investigation.
What this means for shippers
If you import tin mill products from China, you must immediately verify your HS classifications (chapters 72–73) and document the origin and landed costs of current and pending shipments. Landed costs will almost certainly increase once provisional duties are assessed—potentially by 15–50% or more depending on the preliminary finding. Ensure your suppliers provide full documentation of any government support, subsidies, or preferential financing; failure to do so in the Commerce Department questionnaire can result in adverse inferences and higher duty rates. Begin now to identify alternative suppliers outside China or explore product reformulation if economically viable. Monitor the Federal Register for the preliminary determination date.
