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U.S. Antidumping & Countervailing Duties
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Commerce Initiates Antidumping Duty Investigations of Polytetramethylene Ether Glycol from China, South Korea, Taiwan, and Vietnam

Commerce Initiates Antidumping Duty Investigations of Polytetramethylene Ether Glycol from the People’s Republic of China, the Republic of Korea, Taiwan, and the Socialist Republic of Vietnam 

On April 30, 2026, the U.S. Department of Commerce (Commerce) announced the initiation of antidumping duty (AD) investigations of polytetramethylene ether glycol (PTMEG) from the People’s Republic of China (China), the Republic of Korea (Korea), Taiwan, and the Socialist Republic of Vietnam (Vietnam). 

Alleged Dumping Margins

Trading PartnerDumping Margins (Percent) 
China174.95 - 339.69
Korea49.70 - 137.64
Taiwan6.17 - 206.12
Vietnam100.61 - 212.32

Import Statistics

China202320242025
Volume (KG)35,250,59639,799,86926,983,036
Value (USD)$54,789,467 $57,933,751 $35,187,709
Korea202320242025
Volume (KG)48,783,565 71,104,770 82,246,451
Value (USD)$108,209,035$141,914,324$152,842,013
Taiwan202320242025
Volume (KG)8,374,920 8,474,11011,635,021 
Value (USD)$22,560,524$19,649,490 $22,562,435 
Vietnam202320242025
Volume (KG)3,192,922 5,478,385 7,082,527
Value (USD)$7,784,937 $11,063,118 $12,388,418

 

Source:  U.S. Census Bureau, accessed through Trade Data Monitor (Harmonized Tariff Schedule of the United States (HTSUS) subheading 3907.29.0000).  Imports of PTMEG enter under a HTSUS subheading that may cover subject and non-subject merchandise.  Therefore, publicly available import data may not accurately reflect actual imports of PTMEG covered by the scope of the investigations. 

Next Steps

  • The U.S. International Trade Commission (ITC) is currently scheduled to issue its preliminary determination on or around May 26, 2026.  For more information related to the ITC’s timeline, please refer to the ITC’s calendar.
  • If the ITC issues an affirmative preliminary determination, Commerce would be scheduled to announce its preliminary determination on September 16, 2026, for the AD investigation. These deadlines may be extended in accordance with the statute. 

Other Case Information

  • The petitioner is BASF Corporation (Florham Park, NJ).
  • For general information and next steps, please refer to a list of initiation FAQs.

  • Additional case information, including the scope of the investigations and alleged subsidy programs, are on file electronically via Enforcement and Compliance’s Antidumping and Countervailing Duty Centralized Electronic Service System (ACCESS). Once you log in, please refer to case numbers:

    Trading PartnerAD Case Numbers
    ChinaA-570-227
    KoreaA-580-922
    TaiwanA-583-882
    VietnamA-522-855
  • To date, Commerce maintains 832 AD and CVD orders that provide relief to American companies and industries impacted by unfair trade.

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