US confirms antidumping duties on R-134a refrigerant from China
The U.S. Department of Commerce has issued final results of its 2024–2025 administrative review of antidumping duties on 1,1,1,2-tetrafluoroethane (R-134a) from China. Zhejiang Sanmei Chemical Industry Co., Ltd., Jiangsu Sanmei Chemicals Co., Ltd., and Fujian Qingliu Dongying Chemical Ind. Co., Ltd.—the mandatory respondents—along with 23 other Chinese companies, are ineligible for separate rates and remain part of the China-wide entity, meaning they are subject to the prevailing antidumping duty rate. This determination applies to shipments covering April 1, 2024 through March 31, 2025.
Photo: Neil Ni / PexelsUS confirms antidumping duties on R-134a refrigerant from China
On June 22, 2026, the U.S. Department of Commerce published the final results of its administrative review of the antidumping duty (AD) order on 1,1,1,2-tetrafluoroethane (R-134a) from the People's Republic of China, covering the review period April 1, 2024 through March 31, 2025.
Scope and respondents
The review examined three mandatory respondents operating collectively as Sanmei: Zhejiang Sanmei Chemical Industry Co., Ltd.; Jiangsu Sanmei Chemicals Co., Ltd.; and Fujian Qingliu Dongying Chemical Ind. Co., Ltd. An additional 23 companies were also under review. Commerce determined that none of these respondents are eligible to receive a separate antidumping rate.
What this means for shippers
Importers of R-134a refrigerant from China must verify that their suppliers are not subject to circumvention or misclassification schemes. Confirm the current antidumping duty rate applied to your R-134a shipments; all Chinese producers remain subject to the China-wide entity rate. Review your landed-cost calculations now to account for confirmed antidumping duties on this chemical. Check /landed-cost to recalculate duties and ensure your pricing remains competitive.
