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

Preliminary Affirmative Determinations in the 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 November 6, 2026, the U.S. Department of Commerce (Commerce) announced its preliminary affirmative determinations in the 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).

Preliminary Dumping Rates

China

Producer/ExporterEstimated Weighted-Average Dumping Margin (Percent)
China-Wide Entity213.44%

*Rate based on facts available with adverse inferences.

Korea

Producer/ExporterEstimated Weighted-Average Dumping Margin (Percent)
Korea PTG Co., Ltd.25.32
BASF Company Ltd.49.79*
All Others25.32

*Rate based on facts available with adverse inferences.

Taiwan

Producer/ExporterEstimated Weighted-Average Dumping Margin (Percent)
Dairen Chemical Corporation7.46
Formosa Asahi Spandex Co., Ltd.26.42*
All Others7.46

*Rate based on facts available with adverse inferences.

Vietnam

Producer/ExporterEstimated Weighted-Average Dumping Margin (Percent)
Hyosung Dong Nai Company Limited36.55
All Others36.55

Next Steps

  • For China, based on the signature date of the preliminary determination, the final determination should be announced on January 18, 2027.
  • For Korea, Taiwan, and Vietnam, based on the date these preliminary determinations are published in the Federal Register, the final determinations should be announced on or around March 29, 2027.
  • The U.S. International Trade Commission (ITC) is running concurrent injury determination investigations. For more information related to the ITC’s timeline, please refer to the ITC’s calendar.

Other Case Information

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

  • Additional case information, including the scope of the investigations and alleged subsidy programs, 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 case numbers:

    Trading PartnerAD Case Numbers
    ChinaA-570-227
    KoreaA-580-922
    TaiwanA-583-882
    VietnamA-552-855
  • To date, Commerce maintains 856 AD and CVD orders that provide relief to American companies and industries impacted by unfair trade.

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Global Business Navigator Chatbot Beta

Welcome to the Global Business Navigator, an artificial intelligence (AI) Chatbot from the International Trade Administration (ITA). This tool, currently in beta version testing, is designed to provide general information on the exporting process and the resources available to assist new and experienced U.S. exporters. The Chatbot, developed using Microsoft’s Azure AI services, is trained on ITA’s export-related content and aims to quickly get users the information they need. The Chatbot is intended to make the benefits of exporting more accessible by understanding non-expert language, idiomatic expressions, and foreign languages.

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As a beta product, the Chatbot is currently being tested and its responses may occasionally produce inaccurate or incomplete information. The Chatbot is trained to decline out of scope or inappropriate requests. The Chatbot’s knowledge is limited to the public information on the Export Solutions web pages of Trade.gov, which covers a wide range of topics on exporting. While it cannot provide responses specific to a company’s product or a specific foreign market, its reference pages will guide you to other relevant government resources and market research. Always double-check the Chatbot’s responses using the provided references or by visiting the Export Solutions web pages on Trade.gov. Do not use its responses as legal or professional advice. Inaccurate advice from the Chatbot would not be a defense to violating any export rules or regulations.

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