Qingdao Sea Wing Marine Service Co., Ltd. is based in Qingdao, a major Shandong Province port on the Yellow Sea coast that hosts container, crude-oil and bulk terminal complexes at Qianwan, Huangdao and Dongjiakou and a dense cluster of marine safety service providers serving the regional and international fleets. The firm concentrates on marine fire-fighting and lifesaving equipment service work performed onboard commercial vessels calling Qingdao-area berths and the surrounding Yellow Sea anchorages used for crew change, bunkering and routine maintenance. The lifesaving scope covers lifeboat and rescue boat annual and five-yearly servicing, davit and launching system load testing, liferaft annual inflation and pressure testing, renewal of immersion suits and lifejackets and overhaul of associated release gear and on-load hooks together with hoist wires, falls and survival pack contents. Fire-safety work includes portable extinguisher recharge, fire main and hydrant pressure testing, breathing apparatus maintenance on EEBD and SCBA sets used during enclosed-space drills and inspection of fixed CO2, foam and dry-powder installations. Additional disciplines cover lifting appliance and gear surveys supporting cargo-gear certification under SOLAS chapter VI and ILO requirements, and pressure vessel inspection on engine-room and auxiliary vessels. Sea Wing holds service supplier recognition by Bureau Veritas, Lloyd's Register and RINA, allowing records issued from its lifesaving, fire-safety and lifting-gear campaigns to be considered during periodical, intermediate and special surveys on tonnage trading through the Yellow Sea. Customers include shipowners, ship managers and port agents arranging maintenance attendances during commercial port calls in the Qingdao area.