Additive manufacturing equipment manufacturing, additive manufacturing, machining of mechanical parts and components, manufacturing of general parts, manufacturing of high-speed rail equipment and accessories, manufacturing of railway rolling stock parts, repair of metal products, manufacturing of seals, manufacturing of fasteners, manufacturing of springs, mold sales, manufacturing of metal structures, manufacturing of metal tools, manufacturing of metal materials, manufacturing of metal daily-use products, 3D printing services, manufacturing of metal forming machine tools, manufacturing of metal processing machinery, manufacturing of metal cutting and welding equipment, manufacturing of casting machinery, manufacturing of machine tool functional parts and accessories, manufacturing of gas compression machinery, manufacturing of refrigeration and air conditioning equipment, manufacturing of industrial robots, manufacturing of general equipment (excluding special equipment), manufacturing of special operation robots, manufacturing of specialized equipment for oil drilling, manufacturing of mining machinery, manufacturing of metallurgical specialized equipment, mold manufacturing, manufacturing of electronic components and electromechanical components, research and development of new material technologies, technical services, technical development, technical consulting, technical exchange, technology transfer, technology promotion, research and development of metal products, import and export of goods, import and export of technology. Licensed items: research and development and manufacturing of rocket engines, research and development and manufacturing of rocket launch equipment, manufacturing of civil nuclear safety equipment, manufacturing of special equipment, design and production of civil aircraft parts, production of civil aircraft (engines, propellers), manufacturing of micro-satellites.