What happened
China's Ministry of Commerce announced a preliminary ruling in its anti-dumping investigation into dichlorosilane imported from Japan, finding that dumping occurred and caused material injury to the domestic industry.
Starting September 8, 2026, importers must provide cash deposits based on specified rates: 99.2% for Shin-Etsu Chemical and other Japanese companies, and 80.8% for Denal Silane.
The product, used in chip manufacturing for thin-film deposition, falls under Chinese customs tariff code 28539090.
Why it matters
This move could raise costs for Chinese chipmakers relying on Japanese dichlorosilane, potentially affecting semiconductor production supply chains.
The provisional measures signal escalating trade tensions in high-tech materials, with possible impacts on global chip supply and pricing.
The decision may prompt Japanese exporters to adjust pricing or seek alternative markets, influencing international trade dynamics.
Key facts
The investigation began on January 7, 2026, under China's Anti-dumping Regulations.
The preliminary ruling found dumping, material injury, and a causal link between them.
Cash deposit rates are 99.2% for Shin-Etsu Chemical and other Japanese firms, and 80.8% for Denal Silane.
Interested parties may submit written comments within 10 days from the announcement date.
What to watch next
Whether the final ruling will confirm or adjust the deposit rates, and if other products or countries face similar actions.
How Japanese exporters and Chinese importers respond, including possible price negotiations or shifts in sourcing.
The impact on chip production costs and potential effects on downstream electronics prices.