In 2023, China’s Ministry of Commerce (MOFCOM) launched an anti-dumping investigation into imports of dichlorosilane (DCS) originating from Japan. The move aims to protect domestic industries from the adverse effects of unfairly low-priced imports. DCS is a critical electronic-grade chemical widely used in high-tech sectors such as semiconductors and photovoltaics, particularly in silicon epitaxial deposition processes. As China accelerates the development of its semiconductor supply chain, demand for high-purity DCS has surged.However, certain Japanese exporters are alleged to have been selling DCS in the Chinese market at prices below fair value, potentially causing material injury to local producers. Under China’s Anti-Dumping Regulations, MOFCOM will conduct an investigation—typically lasting about one year—to assess dumping margins and the impact on the domestic industry. If dumping is confirmed and found injurious, China may impose anti-dumping duties accordingly. This investigation underscores China’s commitment to fair trade practices and highlights the strategic importance of securing reliable domestic sources for key materials amid global supply chain realignments. While downstream users may face short-term supply uncertainties, the measure could ultimately spur technological advancement and capacity expansion in China’s high-purity chemical sector.
2023年，中国商务部宣布对原产于日本的进口二氯二氢硅（DCS）启动反倾销调查。此举旨在保护国内相关产业免受低价进口产品冲击。二氯二氢硅是一种重要的电子级化学品，广泛用于半导体、光伏等高科技产业中的硅外延沉积工艺。近年来，随着中国半导体产业链加速发展，对高纯度DCS的需求持续增长。然而，部分日本企业被指以低于正常价值的价格向中国市场大量出口该产品，可能对国内生产企业造成实质性损害。根据《中华人民共和国反倾销条例》，商务部将对涉案产品的倾销幅度、对中国产业的影响等进行为期一年左右的调查。若最终裁定存在倾销行为并造成损害，中国将依法征收反倾销税。此次调查不仅体现了中国维护公平贸易秩序的决心，也反映出在全球供应链重构背景下，关键原材料自主可控的重要性。对于国内下游企业而言，短期内可能面临供应波动，但长期看有助于推动本土高纯化学品技术突破与产能提升。
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