Shanghai Yuyang Marine Electronics Equipment Co., Ltd. keeps polishing technical services for gyrocompasses and magnetic compasses, and can complete on‑site installation, commissioning and troubleshooting of such equipment. The enterprise also supplies marine communication‑navigation products such as radio stations, satellite navigators and satellite EPIRBs. Combining product sales with after‑sales maintenance, it solves various practical problems of ship communication‑navigation equipment for shipping enterprises.