Operating from Shanghai, SITC Yongbao Technology Company Limited is a marine technical services company providing statutory and periodical safety servicing to merchant vessels at the Shanghai Port complex and neighbouring terminals. The SITC Yongbao team focuses on the life-saving appliance and fire-fighting equipment scope required by SOLAS Chapter II-2 and Chapter III, supported by general lifting appliance and pressure vessel work. Annual servicing covers lifeboats and rescue boats, inflatable liferafts, davit and launching systems, while inspectors carry out hydrostatic load tests on falls, hooks and winches with full re-certification documentation. Fire-fighting work covers portable extinguisher recharging and pressure testing, fixed CO2, foam and water-spray system inspections in machinery spaces, hydrostatic testing of fire hoses and hydrants, and maintenance of EEBD and SCBA breathing apparatus including cylinder hydro-tests at five-yearly intervals. Lifting appliance and gear surveys are delivered with proof load testing and visual NDT examination of welds, supporting the cargo gear and provision crane requirements of the ILO 152 convention and SOLAS II-1. Pressure vessel inspection is provided on portable extinguishers, breathing apparatus cylinders and small accumulators, with results captured under traceable test pressures. Underwater hull inspections are arranged in cooperation with diving subcontractors to support intermediate surveys in lieu of drydocking. The company is recognised as a service supplier by ABS, Bureau Veritas, DNV and Korean Register, so the service certificates it issues are accepted by attending surveyors for statutory and class purposes on merchant tonnage calling at Shanghai-area ports and at repair yards across the Yangtze River Delta.