Manufacturing of specialized equipment (excluding licensed specialized equipment); manufacturing of mechanical and electrical equipment; sales of mechanical equipment; sales of mechanical parts and components; sales of new energy vehicles; wholesale of hardware products; sales of mechanical and electrical equipment; sales of rubber products; sales of new metal functional materials; sales of specialized chemical products (excluding hazardous chemicals); sales of metal materials; sales of special equipment; sales of chemical products (excluding licensed chemical products); manufacturing of material handling equipment; technology import and export; goods import and export; manufacturing of high-speed rail equipment and parts; sales of high-speed rail equipment and parts; manufacturing of railway locomotive and rolling stock parts; sales of railway locomotive and rolling stock parts. Licensed items: manufacturing of railway transport infrastructure equipment.