SAN-U is a national high-tech enterprise specializing in the research and development, design, production, and sales of semiconductor lasers, detector devices, and components. The company mass produces sensors for laser sensing detection, biomedical testing, ocean monitoring, and other fields. At the same time, the company also produces semiconductor lasers, detectors, and a series of optical transceiver components for big data optical communication. The company has a strong core technology team and a fully equipped research and development platform for new laser sensing devices based on municipal key laboratories and enterprise technology centers.