Japan has voiced strong opposition to China’s recent move to enforce stringent export restrictions on dichlorosilane (DCS), a chemical essential for semiconductor production. These new measures, which require Chinese importers of DCS from Japan to provide hefty cash deposits of up to 99.2%, have prompted Japan to evaluate the potential repercussions on its businesses. Key Japanese exporters such as Shin-Etsu Chemical and Denal Silane are among those impacted by these restrictions.
The Chinese government contends that these measures are temporary, stemming from an anti-dumping investigation that purportedly revealed Japanese DCS exports were detrimental to China’s domestic market. The investigation is ongoing, and a conclusive decision is anticipated upon its completion. In response, Japan has urged China to ensure its actions do not unjustly harm Japanese companies, warning that it might take suitable measures if the situation demands.
This development occurs against the backdrop of deteriorating diplomatic ties between China and Japan, exacerbated by Japan’s stance on Taiwan. Furthermore, China has implemented various trade and export limitations affecting Japanese firms, particularly those dealing with dual-use products that could have military applications.
Dichlorosilane plays a crucial role in semiconductor manufacturing, as it is used to form ultra-thin layers of silicon and other materials on computer chips. Given Japan’s position as a leading global supplier of ultrapure DCS, these new restrictions pose a significant challenge to the semiconductor supply chain.