Based in Xiamen, Sunshine Marine Electronics Co., Ltd. is a marine electronics installer and service house supporting merchant vessels and fishing fleet operators at the principal ports of southern Fujian. The Sunshine Marine team is listed on Marine Electronics industry directories as a certified installer with repair and sales capability, with a focus on navigation, radio communications and safety electronics for SOLAS-Class vessels. Field technicians perform GMDSS annual radio surveys for vessels operating in Sea Areas A1, A2 and A3, in line with SOLAS Chapter IV and IMO Resolution A.1115(30), together with GMDSS equipment service on MF/HF and VHF DSC radios, Inmarsat-C and Fleet terminals, NAVTEX receivers, EPIRBs, SARTs and two-way VHF radiotelephones. AIS Class A annual performance verification is delivered against IMO MSC.74(69) requirements, supported by alignment of GNSS antennas and external sensors and by interface checks to ECDIS and pilot plug terminals. The team also handles routine NDT and remote inspection support on antenna foundations and structural fastenings, working with class and flag-state authorisations and providing repair quotations and spare-parts supply through authorised distributor channels. Technical-bench equipment includes calibrated DSC simulators, RF power and modulation meters and AIS test sets, with calibration sources required for periodic verification. The company is recognised as a service supplier by the China Classification Society, so survey reports and certificates issued for GMDSS, AIS and EPIRB and SART tests are accepted for statutory and class purposes on tonnage calling at Xiamen, Quanzhou, Fuzhou and other adjacent terminals along the Fujian coast.