Based in Nantong, Jiangsu Province, Nantong Yaoyuan NDT Technology Co., Ltd. provides non-destructive examination and structural condition-monitoring services to shipowners, managers and yards operating in the lower Yangtze River shipbuilding cluster. The Nantong region hosts a concentration of new construction and repair facilities, and Yaoyuan dispatches qualified technicians to support both routine class-driven inspection work and damage investigations on bulk carriers, tankers, containerships and offshore tonnage. The company's principal capabilities cover ultrasonic hatch cover tightness testing in line with IACS UR Z17, watertight integrity testing of weathertight doors, manhole covers and bulkhead penetrations, and broader non-destructive examination including ultrasonic flaw detection, magnetic particle inspection and dye penetrant testing on welds, hull plating and primary structural details. In-water survey support is also offered, allowing underwater hull, rudder and propeller examinations to be carried out at anchorage in lieu of drydocking on suitably classed vessels, with photographs and reports provided in formats accepted by attending class surveyors. Yaoyuan holds approvals from ABS, CCS and DNV, allowing reports issued by its inspection teams to be used for statutory and class surveys covering intermediate examinations, special periodical surveys and Condition Assessment Programmes. The Nantong base enables rapid attendance at the surrounding yards and anchorages along the Yangtze estuary, and the company supports both planned dockings and unscheduled inspection requirements for international owners.