立昂微(605358.SH)：暂无碳化硅衬底材料的研发

Group 1 - The company, Lian Micro (605358.SH), currently does not have research and development activities for silicon carbide substrate materials [1] - The company's R&D expenditures are primarily focused on three main business areas: semiconductor silicon wafers, semiconductor power device chips, and compound semiconductor RF and optoelectronic chips [1]