China’s Anti-Dumping Duty Review Into US & South Korea Polysilicon Imports

13 Chinese companies complain of continued injury for domestic industry

MOFCOM China says the current duties on US and South Korean polysilicon suppliers to China will continue to be imposed during the sunset review period. Pictured is the Great Hall of the People building of the Chinese government. (Illustrative Photo; Photo Credit: testing/Shutterstock.com)

Published on:

Jan 13, 2025, 9:59 am

Key Takeaways

MOFCOM is starting a sunset review investigation into anti-dumping tariffs on imported solar-grade polysilicon
Local polysilicon manufacturers have requested the review on US and South Korean companies exporting to China
The investigation will begin from January 14, 2025 and complete before January 14, 2026

The Chinese Ministry of Commerce (MOFCOM) will conduct a final review into its anti-dumping duties on solar-grade polysilicon imported from the US and South Korea. The sunset review investigation will begin from January 14, 2025 and complete before January 14, 2026.

The review is being conducted in response to a petition filed by 13 Chinese companies including Sichuan Yongxiang Polysilicon on behalf of the domestic solar-grade polysilicon industry on November 18, 2024.

According to the petition, terminating the existing anti-dumping measures on imports from the US and South Korea will lead to continued dumping and continued damage to the domestic industry.

It encapsulates rod-shaped polysilicon, block-shaped polysilicon, and granular polysilicon products using chlorosilane as raw material using the Siemens method and silane method used for the production of crystalline silicon PV cells.

The anti-dumping review will cover the period from January 1, 2024 to December 31, 2024, while the industry injury investigation period is from January 1, 2020 to December 31, 2024. The existing duties will continue to remain in place during the sunset review within the scope of taxable products and tax rates announced in 2014, 2017 and 2020. It last extended the duties for 5 years in 2020.

The US companies that are targeted under this investigation include REC Solar Grade Silicon, REC Advanced Silicon Materials, Hemlock Semiconductor, MEMC Pasadena, AE Polysilicon Corporation, among others, with current duties ranging within 53.3% and 57%. Incidentally, REC Silicon recently announced plans to exit polysilicon manufacturing in the US and focus on silane gas production instead (see REC Silicon To Exit US Polysilicon Manufacturing For Good).

The South Korean companies covered are OCI Company Ltd., Korea Silicon of Hankook Silicon, Hanwha Solutions Corporation, SMP, Woongjin Polysilicon, KCC Corp and Korean Advanced Materials (KAM), Innovation Silicon, and others, with current duties ranging within 4.4% to 113.8%. Details of the same are available on the MOFCOM website.

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