The United States has made an initial anti-dumping ruling on fiberglass door panels.

According to the China Trade Remedies Information Network, on January 20, 2026, the U.S. Department of Commerce issued a notice of preliminary anti-dumping ruling on glass fiber door panels imported from China on January 16, 2026, preliminarily determining that the dumping margin of Chinese producers/exporters ranged from 38.78% to 147.85%. The specific tax rates can be found in the table below. The U.S. Department of Commerce is expected to make a final anti-dumping ruling on May 15, 2026. This case mainly involves products under U.S. Customs code 3925.20.0010. On April 10, 2025, the U.S. Department of Commerce initiated anti-dumping and countervailing duties investigations on glass fiber door panels imported from China.