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United States Imposes 208.49% Tariff On Chinese Glass Fiber Products

Plastmatch 2026-06-16 15:25:24

Special Plastics Vision has learned that the U.S. Department of Commerce recently announced its final affirmative determinations in the anti-dumping (AD) and countervailing duty (CVD) investigations into glass fiber door panels originating in China. The U.S. Department of Commerce determined that the relevant Chinese companies engaged in dumping and received subsidies, causing material injury or the threat of material injury to the domestic industry in the United States.

Final tax rate announced

According to the final determination of the U.S. Department of Commerce:

Anti-Dumping Duty (AD)

▶ Minimum tax rate: 41.82%

▶ Highest tax rate: 147.85%

Deposit rates after deducting subsidy offset factors: 41.79%–147.82%

Countervailing Duty (CVD)

▶ Minimum tax rate: 58.50%

▶ Top tax rate: 186.46%

It is worth noting that the countervailing duty rates have been lowered compared with the previous preliminary ruling. In the earlier preliminary stage by the U.S. Department of Commerce, the subsidy rate for some companies had once reached as high as 921.42%.

Combined anti-dumping and countervailing duty rate

▶ Minimum combined tax rate: 108.04%

Highest combined tax rate: 208.49%

This means that after certain companies’ products enter the U.S. market, they will face additional tariff costs exceeding twice the value of the goods.

Scope of Products Involved in the Case

The products involved in this investigation are:

Fiberglass Door Panels and Fiberglass Sidelites. Includes:

Finished and Semi-finished Products

Assembled and unassembled products

Pre-installed door system products

Related products as part of the entrance door system.

The U.S. Department of Commerce determined that the scope covers door panel products containing at least one fiberglass facing. The main HTSUS codes involved are:

3925.20.0010

4418.29.4000

4418.29.8030

4418.29.8060

7019.90.5150

图片

Impact on the Export Market to China

Public data shows that in 2024, the amount of fiberglass doors imported by the United States from China is approximately $146 million (about 990 million yuan).

Industry insiders believe that with anti-dumping and countervailing duty rates exceeding 100%, the competitiveness of Chinese fiberglass door products in exports to the U.S. will be significantly affected. Some companies may face challenges such as order transfers, market share declines, and squeezed profit margins.

At the same time, companies across the relevant industrial chain will also closely watch the outcome of the U.S. International Trade Commission’s (USITC) final injury determination to decide whether the corresponding trade remedy measures will be formally implemented.

merlin_184303614_3d1ebe27-a45a-425e-8d64-77e358335a54-master1050.jpg

It is worth noting that since the beginning of this year, the United States has remained active in initiating trade remedy investigations against Chinese building materials, industrial products, and manufacturing products.

In addition to fiberglass door panels, the U.S. Department of Commerce has previously conducted anti-dumping and countervailing investigations on certain steel products, packaging materials, wooden products, and other items. Industry insiders generally believe that, in the context of the ongoing U.S. manufacturing protection policies, Chinese export enterprises need to pay more attention to trade compliance risks and changes in tariff policies in key markets.

The overall final anti-dumping and countervailing duty rates on fiberglass door panels remain high, indicating that the United States continues to strengthen trade protection measures in the building materials sector. For the enterprises concerned, it will be necessary going forward to place greater emphasis on market diversification, overseas capacity development, and trade compliance management in order to reduce operational risks arising from policy changes in any single market.

 

Editor: Abby

Compiled and consolidated from China Trade Remedies Information, Waitusi Talks Shipping, Zhejiang Dexin International Logistics Co., Ltd., and other sources.

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