Japan has lodged a protest against China’s recent decision to impose stringent restrictions on the export of dichlorosilane (DCS), a critical chemical in semiconductor production. These new measures, which require Chinese importers of DCS from Japan to make cash deposits of up to 99.2%, have prompted Japan to evaluate the potential repercussions for its companies, including major exporters like Shin-Etsu Chemical and Denal Silane.
China has stated that these restrictions are temporary, introduced following an anti-dumping investigation that indicated Japanese DCS exports had adversely impacted China’s domestic industry. While the measures are currently provisional, a conclusive decision will be made once the investigation is finalized. Japan’s government has called on China to ensure that these actions do not unduly harm Japanese businesses and has indicated that it will respond appropriately if necessary.
This development occurs against a backdrop of increasingly strained relations between China and Japan, particularly concerning Japan’s stance on Taiwan. In addition to the DCS restrictions, Beijing has enacted other trade and export limitations affecting Japanese companies, particularly those dealing with dual-use products that could have military applications.
Dichlorosilane plays a vital role in semiconductor manufacturing, as it is used to form ultra-thin silicon layers and other materials on computer chips. Given Japan’s position as a leading global producer of high-purity DCS, these restrictions are poised to have significant implications for the semiconductor supply chain.