The registered address of tianjin bridge welding group ltd. Is located at 35 zin hong kong avenue, western zing economic development zone, tianjin city. The legal entity is the market supervision authority of the western zing zhong zone, tianjin city. It operates on behalf of yang song and covers the manufacture and processing of titan powder, construction materials, welding bars; the export of products and related technologies from the enterprise and its member enterprises; the import of raw materials, mechanical equipment, instrumentation forms, spare parts and related technologies from the enterprise and its members for scientific research purposes; the processing and marketing of inputs from the enterprise; the manufacture and sale of grinding, grinding, welding and welding materials; the sale of steel; the technical testing of welding materials; the acquisition of welding materials (electric welding, solid welding, drug welding, welding, welding, etc.); the development and manufacture of grinding materials; the construction of welding works, services; and the management of the enterprise (in accordance with the requirements specified in the above). (projects subject to legal approval may not operate without the approval of the relevant department)