U.S. Sets Preliminary Subsidies on Fiberglass Door Panels from China

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The U.S. Department of Commerce has made a preliminary decision about fiberglass door panels from China. Officials found these items receive unfair help, called subsidies, from the Chinese government.

What Is Being Investigated

The investigation looks at fiberglass door panels, including their side panels, known as sidelites. These panels can be finished or unfinished, assembled or unassembled, and can come with other door parts. Only the fiberglass panels and sidelites are included in the investigation. Parts like door handles or locks are not covered.

Investigation Timeline

This investigation covers products from January 1, 2024, through December 31, 2024. The Commerce Department started the investigation on April 15, 2025. It postponed the timeline, and released the preliminary decision on August 18, 2025.

Companies and Their Rates

Commerce examined two companies:

  • Dalian Capstone Engineering Co., Ltd.: 71.37% subsidy rate
  • Jiangxi Fangda Tech Co., Ltd.: 59.17% subsidy rate

Several other companies did not answer the Department’s questions. These companies receive a much higher rate:

  • Kits Glass (China) Limited
  • Hebei Charlotte Enterprise Co., Ltd.
  • Lily Industries Co., Ltd.
  • Shanghai Unikey International Trading Co., Ltd.
  • Zhejiang Kuchuan Door Co., Ltd.
  • Zhenshi Group Huamei New Materials Co Ltd.

Each of these companies was given a 921.42% subsidy rate.

All other companies that were not examined will use an “all others” rate of 62.55%.

What Happens Next

U.S. Customs will start holding back, or suspending, fiberglass door panel imports from China starting August 21, 2025. Companies must pay cash deposits at the rates above when importing these products.

Commerce will double-check its information before making a final decision. The final results will come out by December 30, 2025, unless postponed.

How to Respond

People or companies interested in this topic can send in written comments. They must follow special rules for submitting comments, including how long the comments can be. If anyone wants a hearing, they must ask within 30 days of this notice.

What Is Covered

The investigation covers most fiberglass door panels and sidelites from China, even if they are:

  • Assembled or not
  • Painted or not
  • Have glass panels or not
  • Imported with other parts

Some products are not included, like certain wood mouldings and float glass products. The items are normally imported under codes like 3925.20.0010, and sometimes under 4418.29.4000, 4418.29.8030, 4418.29.8060, or 7019.90.5150.

Next Steps

The U.S. International Trade Commission will decide if the imports hurt U.S. businesses. They will do this after Commerce makes its final decision.

For more details, people can find information online at the U.S. Department of Commerce website.

This post is based on the official U.S. Federal Register notice dated August 21, 2025 (Federal Register Volume 90, Number 160, Notices: Pages 40818-40821).


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