Technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; mechanical parts and parts processing; bearings, gears and transmission parts manufacturing; general parts manufacturing; mold manufacturing; copying and offset printing equipment manufacturing; gears and gear reduction, gearbox manufacturing; plastic packaging boxes and containers manufacturing; office equipment consumables manufacturing; metal cutting machine tool manufacturing; metal cutting processing services R&D of metal products; R&D of motorcycles and parts; manufacturing of power electronic components; manufacturing of electronic (gas) physical equipment and other electronic equipment; manufacturing of special electronic materials; manufacturing of electronic components; manufacturing of other electronic devices; production of battery spare parts; manufacturing of special equipment for the production of glass, ceramics and enamel products; sales of mechanical parts and components; sales of gears, gear reducers and gearboxes; sales of bearings Sales of gears and transmission parts; sales of molds; sales of plastic products; sales of testing machines; sales of rubber products; sales of copying and offset printing equipment; retail of hardware products; sales of metal products; sales of metal cutting and welding equipment; sales of power electronic components; sales of electronic special materials; sales of electronic products; sales of special electronic equipment; maintenance of electronic and mechanical equipment (excluding special equipment); electrical Wholesale of sub-components; retail of electronic components; sales of battery spare parts;; professional design services; graphic design; industrial design services; graphic design and production; information consulting services (excluding licensing information consulting services); bill information consulting services; information technology consulting services; social economic consulting services; technology intermediary services; artificial intelligence public service platform technical consulting services; import and export of goods.