Special equipment manufacturing (excluding licensed professional equipment manufacturing); electric vehicle charging infrastructure operation; charging control equipment rental; centralized fast charging stations; charging pile sales; new energy vehicle electrical accessories sales; new energy vehicle battery swapping facility sales; display device sales; display device manufacturing; new energy vehicle vehicle sales; automobile sales; spring sales; spring manufacturing; paint sales (excluding hazardous chemicals); plastic product sales; plastic product manufacturing; metal Sales of chains and other metal products; manufacturing of metal chains and other metal products; sales of metal seals; manufacturing of metal seals; retail of hardware products; wholesale of hardware products; manufacturing of hardware products; retail of electronic components; wholesale of electronic components; manufacturing of electronic components; manufacturing of power electronic components; sales of fasteners; manufacturing of fasteners; sales of rubber products; manufacturing of rubber products; retail of sporting goods and equipment; wholesale of sporting goods and equipment; manufacturing of sporting goods ; Sales of metal packaging containers and materials; Manufacturing of metal packaging containers and materials; Sales of metal products; Sales of bearings, gears and transmission parts; Sales of gears, gear reducers and gearboxes; Manufacturing of gears, gear reducers and gearboxes; Manufacturing of electric motors; Sales of metal cutting and welding equipment; Manufacturing of metal cutting and welding equipment; Engage in investment activities with own funds; Wholesale of computer software, hardware and auxiliary equipment; Manufacturing of computer software, hardware and peripheral equipment; Manufacturing of motorcycle spare parts Wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; software sales; metal surface treatment and heat treatment processing; sales of office equipment and consumables; non-residential real estate leasing; housing leasing; land use rights leasing; sales of mechanical parts and components; sales of mechanical equipment; mechanical parts and parts processing; retail of auto parts and accessories; wholesale of auto parts and accessories; parking lot services; manufacturing of auto parts and accessories; aquaculture; technology import and export; import and export of goods;