Yangzhou Baojun Ship Technical Service Co., Ltd. is a marine inspection contractor based in Yangzhou, Jiangsu Province, on the lower Yangtze River, supporting shipyards and tonnage trading through the Yangzhou-Taizhou-Jingjiang newbuild and repair cluster. Core services cover non-destructive testing and condition monitoring with technicians qualified for ultrasonic, magnetic particle, dye-penetrant, visual and radiographic methods used during hull fabrication, machinery overhaul and periodic survey campaigns. Hatch cover ultrasonic tightness testing is offered for bulk carriers, multipurpose vessels and general cargo ships during port calls and dockings, with reports identifying gasket compression problems, distortion at coamings and cross-joint leakage paths so that operators can plan rectification before cargo loading. Watertight integrity testing extends to cargo holds, weathertight doors, hatch coamings, manhole covers, ventilator closures and double-bottom boundaries in support of load-line, SOLAS chapter II-1 and IACS practice. Underwater inspection in lieu of drydocking is conducted by qualified dive teams, with hull, sea chest, rudder and propeller examinations documented through video and photographic packages submitted directly to attending classification surveyors. Yangzhou Baojun operates within the directories of recognised service suppliers maintained by ABS, CCS and Korean Register for these statutory service categories, giving owners trading internationally a multi-class contact for combined NDT, tightness testing and in-water survey campaigns through the Yangtze Delta yards. Equipment fleets include calibrated digital thickness gauges, ultrasonic flaw detectors, magnetic particle yokes, dye-penetrant kits, ultrasonic chalk-test kits and dive spreads, with traceable calibration and operator qualification records maintained in accordance with national NDT certification schemes applied across the Yangtze Delta newbuild and repair yards serving bulkers and tankers.