Shanghai Dexie Engineering Equipment Co., Ltd. is a Shanghai-based marine electronics and engineering services firm supporting commercial vessels calling at terminals in the Yangtze River estuary and along the East China coast. The company specialises in shipboard radio, navigation and safety electronics work, performing Voyage Data Recorder and S-VDR annual performance tests, GMDSS annual radio surveys, GMDSS equipment maintenance and AIS annual inspections in line with SOLAS Chapter IV and Chapter V requirements. In parallel with electronics activities, technicians carry out non-destructive testing, remote inspection and condition monitoring scopes covering welds, plating and machinery components, allowing combined attendances that address electronic and structural items during a single port call. Service supplier approvals held under ABS, BV, CCS, KR, Lloyd's Register and RINA support acceptance of reports during periodical, intermediate and special surveys carried out by attending surveyors. From its Shanghai base, Shanghai Dexie dispatches engineers and certified test equipment to vessels berthed at Yangshan, Waigaoqiao and other terminals across the region, coordinating attendances around cargo operations and tight commercial schedules. The team works routinely with masters, chief officers, superintendents and flag-state inspectors, delivering documentation aligned with class society service supplier procedures. Through this combination of radio and navigation testing capability, NDT expertise and broad class society recognition, the firm contributes to compliance, equipment reliability and crew safety for owners, managers and operators relying on shipboard communication and safety electronics. Customers include domestic shipping companies, international operators and the technical superintendents who manage their fleets across the Asia-Pacific region. The firm continues to invest in trained personnel and calibrated test instruments to maintain dependable performance across all engagements.