The duties range from 53.3% to 57% for U.S. producers and from 2.4% to 48.7% for South Korean companies and will remain in place for another five years.
China’s Ministry of Commerce (MOFCOM) has extended anti-dumping duties it imposed in 2014 on solar silicon imports from the United States and South Korea.
The duties range from 53.3% to 57% for U.S. producers and from 2.4% to 48.7% for South Korean companies and will remain in place for another five years.
Affected US manufacturers include REC Solar Grade Silicon LLC, REC Advanced Silicon Materials LLC, Hemlock Semiconductor Corp., MEMC Pasadena Inc. and AE Polysilicon Corp. South Korean producers subject to the duties include OCI Co. Ltd., Hankook Silicon Co. Ltd., Hanwha Solutions Corp., SMP Corp., Woongjin Polysilicon Co. Ltd., KCC Corp., Korean Advanced Materials (KAM Corp.) and Innovation Silicon Co. Ltd.
However, many of these companies no longer produce polysilicon for the PV industry.
MOFCOM launched a rights review in January 2025.
At the time, it said 13 Chinese companies, led by Sichuan Yongxiang Polysilicon, had requested the review, saying ending the duties could lead to renewed dumping of U.S. and South Korean polysilicon and hurt the domestic industry.
China extended tariffs for the first time in 2020 by five years. MOFCOM said the review request and the evidence provided meet the requirements for a final assessment. Initially imposed in 2014, tariffs for U.S. companies ranged from 53.3% to 57%, and for South Korean manufacturers from 2.4% to 48.7%.
In 2017, China adjusted import duties to 4.4-113.8%.
China has excluded European polysilicon manufacturers, mainly German producers, from the 2014 tariffs after reaching an agreement with Germany.
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