Nantong Yuecheng Marine Service Co., Ltd operates from Nantong, a Jiangsu Province port city on the north bank of the lower Yangtze that hosts major shipyards, large terminals at the Tongzhou Bay and Rugao deep-water areas and a strong base of marine-equipment service providers. The firm provides on-board technical attendance covering lifesaving, fire-safety, radio-survey and tightness-testing scopes on commercial vessels calling Nantong-area berths and Yangtze anchorages used for crew change, bunkering and routine maintenance. Lifesaving services include lifeboat and rescue boat annual inspection and overhaul, liferaft servicing with inflation and pressure testing, portable extinguisher recharge and breathing apparatus maintenance on EEBD and SCBA sets used in enclosed-space drills. Fire-safety work covers fire main and hydrant pressure testing, fixed-system inspections and renewal of associated consumables. Radio-survey scope covers GMDSS annual testing on MF/HF and VHF installations, EPIRBs, SARTs and NAVTEX receivers, GMDSS equipment maintenance and AIS annual performance verification on shipborne communication and navigation installations. Tightness work covers ultrasonic hatch-cover testing on weather-deck closures and watertight integrity checks on bulkheads and door arrangements where SOLAS tightness requirements apply. Nantong Yuecheng holds service supplier recognition with Bureau Veritas, the China Classification Society and the Indian Register of Shipping, allowing reports issued from its lifesaving, fire-safety, radio and tightness campaigns to be considered during periodical, intermediate and special surveys carried out under SOLAS and class rules on commercial tonnage trading the Yangtze River and East China Sea, with attendance dispatched to vessel berths and anchorages on short notice.