Xinde Marine Service Co., Ltd. is a Tianjin-based marine communication and navigation services firm specialising in shipboard radio, satellite, electrical navigation and ship local-area-network systems. The company holds ISO 9001 quality certification and is recognised by major classification societies including CCS, ABS, NK, DNV and Lloyd's Register as an authorised service supplier for safety radio, EPIRB and VDR survey work. With more than three decades of experience in ship communication and navigation equipment service, the technical team includes engineers covering installation, commissioning, repair and annual survey activities. The service portfolio covers Voyage Data Recorder and S-VDR annual performance tests, GMDSS annual radio surveys, GMDSS equipment maintenance, AIS annual inspections, EPIRB and SART testing alongside underwater inspection support and non-destructive testing including ultrasonic, magnetic particle, dye penetrant and visual methods on welds and structural members. Xinde Marine has set up service outlets in Tianjin, Guangzhou, Shanghai, Dalian, Qingdao and Jiaxing, providing 24/7 technical support and on-board service across major Chinese ports for radio and navigation systems, satellite communication equipment and electrical navigation devices. Working with shipowners, ship managers and international operators trading through China, the firm supports compliance with SOLAS Chapter IV and Chapter V requirements, port state control expectations and class society survey schedules. By combining decades of radio and navigation expertise, broad class recognition and a multi-port branch network, the company offers a coordinated technical service to commercial vessels that depend on dependable shipboard communication, safety and navigation systems on intra-Asian and worldwide trades operating into Chinese gateways.