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China Extends Trade Barrier Probes Into US Measures to December 27, Timed With Trade Truce Extension
Reporter 欧亚时报编辑部
China's Ministry of Commerce (MOFCOM) recently issued two consecutive announcements — Announcements No. 41 and No. 42 of 2026 — extending the investigation period for two trade barrier probes into US practices and measures. Announcement No. 41 concerns an investigation into US practices and measures alleged to damage global production and supply chains, while Announcement No. 42 concerns an investigation into US practices and measures alleged to obstruct trade in green products. Both investigation periods have been extended to December 27, 2026. MOFCOM said the extensions were made under Article 32 of China's Rules on Trade Barrier Investigations for Foreign Trade, citing the inherent complexity of the cases.
Both investigations were formally launched on March 27, 2026. Public records show MOFCOM opened the cases at the request of relevant domestic industries, probing a series of US practices and measures seen as damaging the security of global industrial and supply chains and obstructing international trade in green, low-carbon products. The targeted measures are widely understood to be linked to earlier US use of tools such as Section 301 actions to restrict Chinese industries and exports. Both cases originally carried a six-month investigation window, due to conclude by September 27, 2026, but MOFCOM decided to extend the period by three months under the law, citing the complexity of the cases and the volume of agencies and evidence involved.
Notably, the timing of MOFCOM's extension announcements coincided with a period of relative easing in China-US bilateral trade relations. Multiple media outlets had previously reported that trade teams from both countries, following a fresh round of talks, agreed to extend their earlier trade truce by a further two months, pushing the deadline to January 10, 2027, while maintaining tariff reductions on roughly $60 billion worth of goods. Analysts say the fact that MOFCOM continued to methodically advance its trade barrier investigations into US measures even as bilateral relations showed signs of easing signals China's approach of keeping negotiations and investigations on separate tracks — meaning progress in one phase of trade talks does not automatically affect the legal investigation process China is pursuing into specific US practices.
In terms of substance, the Announcement No. 41 investigation focuses on export controls, investment screening, and restrictions on critical minerals and advanced technology products that the US has rolled out in recent years, which China views as fragmenting global production and supply chains across sensitive sectors including semiconductors, artificial intelligence and critical minerals. The Announcement No. 42 investigation focuses on tariff and non-tariff barriers the US has imposed on green products such as new-energy vehicles, solar components and batteries. China contends these measures, while framed around "national security" and "supply chain resilience," effectively impose discriminatory restrictions on China's green industries and harm the normal business interests of Chinese firms in the US market. The eventual findings of both investigations, and any retaliatory measures that might follow, are being closely watched by industry groups in both countries and international trade observers.
Under China's Rules on Trade Barrier Investigations for Foreign Trade, an investigation should in principle conclude within six months of being opened, with a possible extension in special circumstances of up to three months — meaning a single investigation can run for a maximum of nine months in total. This latest extension means both cases have now exhausted their legally permitted extension period, requiring MOFCOM to reach conclusions before the final December 27 deadline and potentially decide on trade remedies or countermeasures accordingly. Market observers expect that if the investigations ultimately find the relevant US practices and measures do constitute trade barriers, China could respond through consultations, the World Trade Organization's dispute settlement mechanism, or unilateral countermeasures — with the specific path likely to depend on the broader state of China-US economic and trade relations at that time.
Trade barrier investigations are a standing trade remedy tool China established in 2005, mechanically similar to US Section 301 investigations: a domestic industry or trade association files a request, and MOFCOM determines whether a given country or region's trade measures constitute a "trade barrier" and harm domestic industry interests. In recent years, as China-US economic and trade friction has continued to evolve, China has markedly increased its use of this tool, with investigation targets expanding from traditional tariff measures to more complex non-tariff areas such as export controls, subsidy policies, technical standards and industrial subsidy reviews — reflecting a trend toward more diversified and specialized Chinese responses to trade disputes. Around the same time as this extension, MOFCOM also opened an anti-dumping investigation into imports of para-nitrotoluene originating from the European Union, illustrating that China is simultaneously advancing multiple trade remedy and barrier investigations against several trading partners at a noticeably faster pace.
US trade circles and some industry associations reacted cautiously to news of the extension. Some representatives of US semiconductor and new-energy firms worried that if the investigations ultimately find US measures constitute trade barriers, China could still take reciprocal or symbolic countermeasures, further disrupting an already fragile bilateral industrial cooperation relationship. Other analysts argued the extension itself is largely procedural and does not necessarily signal that China has already leaned toward a finding against the US or is poised to take firm retaliatory action — the real policy signal, they say, will only become clear once the final conclusions are published after December 27. Either way, the extension underscores that even as China-US trade relations show signs of easing, the structural contest between the two sides over advanced technology and green industries remains a long and complex process unlikely to be fully resolved by a single short-term truce agreement.
Looking ahead, MOFCOM must reach final conclusions on both cases before December 27 — a point roughly two weeks before the extended China-US trade truce is due to expire on January 10, 2027, making it a significant marker for gauging the next phase of bilateral economic and trade relations. Should China rule against the US and announce concrete countermeasures, these would likely span tools such as tariff adjustments, export restrictions or market-access limits in specific industries; a milder conclusion that does not immediately trigger countermeasures, on the other hand, could leave more room for a fresh round of talks before the truce expires. Whatever the eventual outcome, the extension itself already shows that the structural disagreements between China and the US over supply chain security and green industry rules will, in the near term, continue to play out through multiple parallel channels — legal investigations and negotiating leverage alike — rather than being resolved simply by a single truce agreement.
