Gelonghui, May 22丨Zhonghaida (300177.SZ) said on the investor interactive platform that the company mainly provides automotive high-precision positioning product solutions, technical support and services for passenger cars, commercial vehicles and special vehicles (including port trucks, construction site construction vehicles, unmanned logistics delivery, etc.), mainly including: vehicle-side software and hardware products: high-precision positioning antennas, vehicle-mounted combination (4G/5G+GNSS) antennas, high-precision positioning units, inertial measurement units, map positioning sensors (IPM), high-precision positioning algorithms Services, etc.; high-precision map front-end data acquisition systems, crowdsourced acquisition equipment and back-end data processing software platforms and data collection and processing services suitable for intelligent driving; high-precision location infrastructure networking construction suitable for intelligent driving, which can provide applications integrating satellite-based and ground-based enhancement technology in the vehicle side.