Ministry of Commerce and Industry: It is preliminarily determined that Japanese dichlorosilicon is subject to dumping
The Ministry of Commerce has initially determined that Japanese dichlorodihydrosilicon is subject to dumping and has decided to impose temporary anti-dumping duties.
On September 8, 2026, the Ministry of Commerce initially determined that imports of dichlorodihydrosilicon originating from Japan engaged in dumping activities and decided to impose temporary anti-dumping duties. In accordance with the Anti-Dumping Regulations of the People’s Republic of China, the investigating authority ruled that the dumping margin for Japanese companies involved was between 80.8% and 99.2%. Starting from that date, import operators were required to provide the customs with the required margins at this rate. The Ministry of Commerce initiated an investigation on January 7, 2026, at the request of domestic industries. Preliminary evidence indicated that this product caused substantial harm to domestic industries, and there was a causal relationship between dumping and harm. Dichlorodihydrosilicon is mainly used in thin film deposition during chip manufacturing and in the production of various chips and silicon-based precursors. China stated that it would continue the investigation in accordance with the law and make a final decision.
January 7, 2026Date of initiation of the investigation
80.8%Lower limit of the dumping margin
99.2%Upper limit of the dumping margin
September 8, 2026Date of implementation of the measures
Key entitiesKEY ENTITIES
JapanMinistry of Commerce
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Regulation
国内 · 主流媒体across 2 days
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The Ministry of Commerce has initially determined that Japanese dichlorodihydrosilicon is subject to dumping and has decided to impose temporary anti-dumping duties.
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Integrated timelineUNIFIED TIMELINE
2026-09-07
The Ministry of Commerce has initially determined that Japanese dichlorodihydrosilicon is subject to dumping. The Ministry decided to impose temporary anti-dumping duties based on its initial determination that imported dichlorodihydrosilicon from Japan constitutes dumping. According to the Anti-Dumping Regulations of the People’s Republic of China, the investigating authority determined that the dumping margin for Japanese-related companies ranged from 80.8% to 99.2%. The Ministry initiated the investigation on January 7, 2026, at the request of domestic industries, and initially…
The Ministry of Commerce announced the implementation of temporary anti-dumping measures.
Starting from September 8, 2026, the Ministry of Commerce will require importers to provide appropriate amounts of duty to customs according to the margin ratio determined in the initial ruling to implement temporary anti-dumping measures.
The Ministry of Commerce initially determined that imported dichlorosilicon originating from Japan constituted dumping. The investigating authority decided, effective September 8, 2026, to require importers to provide corresponding security to the customs at the margin ratio determined in the preliminary ruling to implement temporary anti-dumping measures. The Ministry of Commerce initiated an investigation on January 7, 2026, at the request of the domestic industry. Preliminary evidence indicated that the product constituted dumping and there was a causal relationship between it and substantial damage to the domestic industry. The dumping margin for Japanese companies was determined to be 80.8% to 99.2%. Dichlorosilicon is mainly used in thin film deposition during chip manufacturing and in the production of various chips and synthetic silicon precursors. China will continue to conduct investigations in accordance with law and make a final ruling.
The Ministry of Commerce initially determined that imported dichlorosilicon originating from Japan constituted dumping and decided to impose a temporary anti-dumping penalty. Based on the Anti-Dumping Regulations of the People’s Republic of China, the investigating authority ruled that the dumping margin of the Japanese companies involved was between 80.8% and 99.2%. It was stipulated that starting from September 8, 2026, importers must pay the penalty to the customs at this rate. The Ministry of Commerce initiated an investigation on January 7, 2026, at the request of the domestic industry, determining that this product caused substantial harm to the domestic industry and that there was a causal relationship between dumping and harm. Dichlorosilicon is mainly used in thin film deposition during chip manufacturing and in the production of various chips and synthetic silicon precursors. China stated that it will continue the investigation in accordance with the law and make a final ruling.