On September 7, 2026, the Ministry of Commerce issued a preliminary ruling on its anti-dumping investigation into imported dichlorosilane from Japan. The ruling concluded that the product in question was indeed being dumped in the Chinese market, resulting in substantial harm to the domestic industry. Furthermore, a clear causal link was established between the dumping activities and the injury suffered by the domestic sector. Consequently, the Ministry of Commerce has decided to implement provisional anti-dumping measures. These measures will take the form of cash deposits on all imports of dichlorosilane from Japan, effective from September 8, 2026.

The product under scrutiny is a colorless, flammable, and toxic gas, boasting a purity level exceeding 99% under standard temperature and pressure conditions. Its primary application lies in the thin-film deposition process, which is crucial in chip manufacturing. Regarding the cash deposit rates imposed on Japanese companies, Shin-Etsu Chemical Co., Ltd. faces a rate of 99.2%, while Denka Silane Co., Ltd. is subject to an 80.8% rate. All other Japanese companies will also be levied at a rate of 99.2%. These cash deposits will be calculated ad valorem, based on the customs-determined taxable value of the imported goods.

Interested parties are invited to submit their written comments within 10 days from the date of this announcement, providing an opportunity for further input and consideration.