Hainan Weihang Communication & Navigation Technology Co., Ltd. is a Haikou-based supplier specializing in shipborne communication and navigation equipment for vessels trading in the South China Sea and to and from the free trade port of Hainan. The company handles production, sales, installation, maintenance, periodic testing and whole-ship outfitting of bridge electronics, covering GMDSS radio installations, AIS transponders, EPIRB and SART devices, and associated antennas and power supplies. Within the framework of recognition by the China Classification Society it performs GMDSS annual radio surveys and equipment servicing, AIS annual inspections, and supports non-destructive examination work on metallic components and brackets associated with the equipment it installs. Hainan Weihang acts as a one-stop service partner for owners of cargo ships, fishing vessels, tugs and government craft operating from Haikou, Yangpu and Sanya, dispatching engineers to vessels alongside or at anchorage and providing after-sales spares for the radios, satellite terminals and navigation sensors it commissions. The company is listed in international marine equipment directories including marinedirectory.ae and Maritimedex, which describe it as a professional ship communication and navigation equipment business serving Hainan Province.