Manufacturing of automotive parts and accessories; processing of mechanical parts and components; manufacturing of specialized equipment for food, wine, beverages, and tea production; intelligent control system integration; installation and maintenance of industrial robots; professional design services; manufacturing of molds; sales of molds; manufacturing of railway rolling stock parts; sales of railway rolling stock parts; sales of metal materials; manufacturing of forgings and powder metallurgy products; sales of forgings and powder metallurgy products; technical services, technology development, technical consulting, technical exchange, technology transfer, and technology promotion; manufacturing of packaging specialized equipment; manufacturing of general equipment (excluding special equipment manufacturing); manufacturing of specialized machinery for agriculture, forestry, animal husbandry, and fishery; manufacturing of agricultural machinery; manufacturing of environmental protection specialized equipment.