Shanghai Traction Marine Co., Ltd. is a Shanghai-based marine technical services firm focused on inspection and survey activities for commercial vessels calling at Yangtze River estuary ports and East China terminals. The company concentrates on three connected service lines: pressure vessel inspection, underwater hull inspection and Inventory of Hazardous Materials work. Pressure vessel inspection covers shipboard pressure vessels and related equipment, including initial, periodic and post-repair examinations in line with class society and statutory requirements. Underwater inspection scopes are delivered by diver-technicians examining hull plating, sea chests, propellers, rudders and anodes, with video and report documentation supporting in-water surveys carried out as alternatives to drydocking. IHM and hazardous materials surveys involve sampling, laboratory analysis and documentation of asbestos, polychlorinated biphenyls, ozone-depleting substances and other hazardous materials referenced in the Hong Kong International Convention and EU Ship Recycling Regulation, with results compiled in IHM Part I, Part II and Part III formats. Shanghai Traction Marine holds service supplier approvals from a broad set of classification societies including ABS, ClassNK, DNV, KR, Lloyd's Register and RINA for relevant categories, supporting acceptance of reports during periodical, intermediate and special surveys and during IHM certification work. From its Shanghai base, the team mobilises to bulk carriers, tankers, container ships and offshore tonnage at Yangshan, Waigaoqiao and other terminals across the region, coordinating efficiently with masters, superintendents and attending surveyors. Through this focused combination of pressure vessel, underwater and IHM capability backed by broad class recognition, the firm provides a structured service offering to shipowners, managers and recycling-yard counterparties active in the region.