National Silicon Industry Group Co., Ltd. (688126.SS) engages in the research, development, production, and sales of semiconductor silicon wafers. The company offers 200mm and 300mm polished wafers, epitaxial wafers, silicon-on-insulator (SOI) wafers, piezoelectric film substrate materials, and customized silicon wafers; its products serve applications including memory chips, image processing chips, general processor chips, power devices, sensors, RF chips, analog chips, and discrete devices. Founded in 2015 and headquartered in Shanghai, China, the company operates primarily in the semiconductor materials industry through major subsidiaries such as Zing Semiconductor and Simgui in China and Okmetic in Finland; it maintains a minority stake in France-based Soitec, a supplier and customer. NSIG conducts global operations with production facilities in China and Finland, targeting domestic and international semiconductor manufacturers. In recent developments, the company completed the acquisition of minority stakes in Shanghai Xinsheng Jingtou Semiconductor Technology Co., Ltd. and related entities in November 2025, achieving 100% ownership of key assets focused on 300mm silicon wafers to enhance business control and supply chain integration. Earlier in 2025, NSIG announced and advanced the acquisition of a 46.74% stake in Shanghai Xinsheng Jingtou Semiconductor Technology for approximately CNY 1.9 billion through a mix of cash and shares, bolstering its position in large-diameter wafer production. The company listed on the Shanghai Stock Exchange STAR Market in April 2022, raising $341 million, and continues to expand via mergers, investments, and international cooperation to strengthen China's semiconductor wafer ecosystem.