China's Ministry of Commerce Implements Anti-Circumvention Measures on US Optical Fiber, Collecting AD Tax of 33.3-78.2%, Continuing Until April 2028

China's Ministry of Commerce announced on September 3 through Commerce Ministry Announcement No. 48 of 2025 the implementation of anti-circumvention measures on certain optical fiber products originating from the United States (HS Code 90011000 cut-off shift single-mode optical fiber, G.654.C optical fiber). This measure is based on the results of an anti-circumvention investigation conducted for up to 6 months starting from March 4. The ministry determined that US optical fiber circumvented existing anti-dumping (AD) measures and decided to collect AD taxes of 33.3-78.2% by target company starting September 4. Target companies and tax rates are: Corning Incorporated 37.9%, OFS Fitel, LLC 33.3%, Draka Communications Americas, Inc. 78.2%, and other US companies 78.2%. The measure period is aligned with existing AD measures until April 21, 2028. In a spokesperson statement on September 4, the Ministry of Commerce explained: "Following an application from Chinese companies, we conducted an investigation through an open and transparent process in accordance with the law, fully protecting the rights of all stakeholders. The investigation results confirmed that some optical fiber exports to China by US exporters circumvented China's AD measures." AD measures on US optical fiber have been implemented since April 22, 2011, and have been renewed for 5-year periods in 2017 and 2023. The Ministry of Commerce Trade Remedy Investigation Bureau stated that this "complies with Chinese law and WTO rules, and aims to ensure the implementation effectiveness of trade remedy measures".