Shanghai Haiyu Lifesaving Equipment Co., Ltd is a Shanghai-based ship service contractor supporting merchant vessels calling at Shanghai, Waigaoqiao, Yangshan and Wusongkou with a broad portfolio covering life-saving appliances, fire-fighting equipment, radio, tightness, in-water inspection and non-destructive testing services. LSA work covers periodical testing, lifeboat and rescue boat servicing, liferaft annual inspection, and examination of immersion suits and lifejackets under SOLAS and IMO guidance. FFE work includes recharging of portable fire extinguishers, examination of fixed CO2, foam and water-spray systems, pressure testing of fire hoses and hydrants, and maintenance of EEBDs and SCBA sets. Radio scopes cover GMDSS annual testing, GMDSS equipment service and AIS annual inspection. Ultrasonic hatch cover testing and watertight integrity verification support tightness compliance, and underwater inspection together with NDT and remote inspection covers hull, rudder, propeller and structural condition assessment work. Service approvals from ABS, CCS and DNV evidence that workshops, procedures and qualified personnel meet the criteria these classification societies apply across the disciplines covered. The technical team coordinates attendance around tight port stays and anchorages around the Yangtze estuary, with reports prepared in formats acceptable to attending surveyors and to owner, manager and crewing offices. The combination of LSA, FFE, radio, tightness, in-water and NDT scopes under one technical roof supports consolidated attendance during single port calls for international operators of bulk carriers, tankers and container ships. Working with bulk carriers, tankers, container ships, general cargo and multipurpose tonnage trading through Shanghai and adjacent Yangtze estuary ports, Shanghai Haiyu coordinates equipment logistics, qualified personnel and class liaison so attending teams deliver consolidated LSA, FFE, radio, tightness, in-water and NDT scopes within available port time, aligning documentation with the vessel's survey programme and continuous safety equipment records.