三安光电：公司的12英寸碳化硅衬底尚处于研发阶段，已生产出工程样品，将继续进行设备调试、提升良率及产品性能

Core Viewpoint - The company is currently in the research and development phase for its 12-inch silicon carbide substrates, having produced engineering samples and is focused on equipment debugging, yield improvement, and product performance enhancement [1] Group 1 - The company's 12-inch silicon carbide substrate is still under development [1] - Engineering samples have been produced [1] - The company will continue to conduct equipment debugging and improve yield and product performance [1]