Non-ferrous metal casting; manufacturing of metal materials; manufacturing of non-ferrous metal alloys; manufacturing of automotive parts and accessories; metal cutting processing services; spray coating processing; electrophoretic coating processing; metal surface treatment and heat treatment processing; non-ferrous metal rolling processing; sales of new metal functional materials; sales of mechanical parts and components; sales of non-ferrous metal alloys; sales of molds; manufacturing of molds; manufacturing of machine tool functional parts and accessories; manufacturing of metal daily-use articles; research and development of metal products; import and export of goods; leasing of non-residential real estate; enterprise management consulting; road freight transport of ordinary goods with total mass of 4.5 tons or less (excluding online freight and dangerous goods); leasing of mechanical equipment; leasing of special equipment; sales of CNC machine tools; sales of metal cutting machine tools; sales of metal forming machine tools; sales of metal cutting and welding equipment; sales of special equipment; sales of mechanical equipment; sales of furniture; sales of metal products; sales of metal tools; sales of casting machinery.