Yantai Tongrui Inspection Technical Services Co., Ltd. is a third-party inspection and non-destructive testing contractor based in Yantai, Shandong Province, with its workshop located at Dongxing Road in the Dongting Industrial Park, Fushan District. The company serves the Yantai, Penglai, Longkou and Weihai shipbuilding and repair yards as well as the surrounding offshore-fabrication, power generation and petrochemical industries along the northern Yellow Sea coast. The technical scope is concentrated on conventional non-destructive examination covering ultrasonic, magnetic particle, dye-penetrant and radiographic testing methods, together with ultrasonic thickness gauging for class-renewal surveys, weld examination on new-build blocks and pipelines, hardness and metallographic checks where required, and class-accepted underwater hull inspection coordinated with diving partners for in-water surveys accepted by class. Yantai Tongrui operates within the wider network of Yantai-based inspection laboratories that have been integrated by SGS and other international testing groups in the region, and the firm is recognised as a service supplier under ABS and DNV for the relevant NDT and in-water survey scopes. Reports issued by the firm are accepted for class-related and statutory inspections on merchant tonnage and offshore units flying flags that recognise these IACS members, with field response coordinated through the Yantai base across the Bohai and Yellow Sea coastal port stations. NDT technicians hold Level II qualifications under recognised certification schemes such as ISO 9712 or SNT-TC-1A, and equipment is calibrated against traceable reference blocks before each campaign. Reports are issued in IACS-aligned formats with traceable inspector signatures, photographic evidence and clear acceptance criteria so that class surveyors can review and witness the work directly without rework.