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U.S. Antidumping & Countervailing Duties
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Final Affirmative Determinations in the Antidumping and Countervailing Duty Investigations of Silicon Metal from Angola, the Lao People's Democratic Republic and Thailand

Final Affirmative Determinations in the Antidumping and Countervailing Duty Investigations of Silicon Metal from Angola, Lao People’s Democratic Republic, and Thailand

On February 18, 2026, the U.S. Department of Commerce (Commerce) announced its final affirmative determinations in the antidumping duty (AD) investigations of silicon metal from Angola and the Lao People’s Democratic Republic (Laos); and countervailing duty (CVD) investigations of silicon metal from Laos and Thailand

Final Dumping Rates

Angola

Exporter/ProducerWeighted-Average Dumping Margin (percent)
PC Silicon Co Limited68.45*
Wanhongda International Limited68.45*
All Others68.45

* Rate based on facts available with adverse inferences.

Laos

Exporter/ProducerWeighted-Average Dumping Margin (percent)
Lao Silicon Co., Ltd94.44*
All Others94.44

* Rate based on facts available with adverse inferences.

Final Subsidy Rates 

Laos

Exporter/ProducerSubsidy Rates (percent)
Lao Silicon Co., Ltd.69.10*
All Others  69.10

*Rate based on facts available with adverse inferences.

Thailand

Exporter/ProducerSubsidy Rates (percent)
G.S. Energy Co., Ltd.31.27*
Sica New Materials (Thailand) Co., Ltd.

31.27*

All Others  31.27

*Rate based on facts available with adverse inferences.

Import Statistics 

Angola202120222023
Volume (KG)001,675,173
Value (USD)00$4,151,880
Laos202120222023
Volume (KG)600,0003,400,0007,957,738
Value (USD)$1,809,000$8,829,250$18,418,739
Thailand202120222023
Volume (KG)7,208,6792,036,5802,828,603 
Value (USD)$29,008,896$6,888,090$7,222,890

Source: U.S. Census Bureau, accessed through S&P Global Trade Atlas (Harmonized Tariff Schedule of the United States (HTSUS) subheadings 2804.69.1000 and 2804.69.5000).

Next Steps 

  • The International Trade Commission (ITC) is running concurrent injury determination investigations. For more information related to the International Trade Commission’s timeline, please refer to the ITC’s calendar.
  • The final determinations in the concurrent AD and CVD investigations of silicon metal from Australia and Norway are currently scheduled to be announced on June 25, 2026.

Other Case Information

  • The petitioners are Ferroglobe USA, Inc. (Beverly, OH) and Mississippi Silicon LLC (Burnsville, MS).
  • For general information and next steps, please refer to a list of FAQs for the final determination.
  • Additional case information, including the scope of the investigations, is on file electronically via Enforcement and Compliance’s Antidumping and Countervailing Duty Centralized Electronic Service System (ACCESS). Once you log in, please refer to the following case numbers:
Trading PartnerAD Case NumberCVD Case Number
AngolaA-762-001 
LaosA-553-001C-553-002
Thailand C-549-856
  • To date, Commerce maintains 808 AD and CVD orders that provide relief to American companies and industries impacted by unfair trade.

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