Ge Long Hui·2025-09-04 03:22Core Viewpoint - Changfei Fiber (601869.SH) saw its stock price rise over 6% to 97 yuan, reaching a historical high due to the Ministry of Commerce's ruling on anti-dumping measures against U.S. imports of specific optical fibers [1] Group 1: Regulatory Changes - The Ministry of Commerce announced a ruling regarding the anti-circumvention investigation of imported wavelength-shifting single-mode optical fibers from the U.S. [1] - The ruling determined that U.S. fiber manufacturers and exporters altered trade practices to export related wavelength-shifting single-mode optical fibers (G.654.C fibers) to China, undermining existing anti-dumping measures [1] - The Ministry proposed adjustments to the tax scope to the State Council Tariff Commission, which decided to apply the current anti-dumping tax rates on non-dispersive wavelength-shifting single-mode optical fibers from the U.S. starting September 4, 2025 [1] Group 2: Anti-Dumping Tax Rates - The anti-dumping tax rates for various companies are as follows: Corning Incorporated at 37.9%, OFS Fitel, LLC at 33.3%, Draka Communications Americas, Inc. at 78.2%, and other U.S. companies at 78.2% [1]