天孚通信：公司定位光器件整体解决方案提供商和光电先进封装制造服务商，产品暂不适用于卫星导航或商业航天

Group 1 - The company, Tianfu Communication, positions itself as a provider of overall optical device solutions and advanced optoelectronic packaging manufacturing services [2] - The company's products are widely used in telecommunications, data centers, fiber connections, and automotive auxiliary driving laser radar, but are not applicable to satellite navigation or commercial aerospace fields [2]