General projects: R&D of machinery and equipment; sales of machinery and equipment; hardware product research and development; hardware product manufacturing; stationery manufacturing; stationery wholesale stationery retail; sales of high-speed rail equipment and accessories; bearing sales; manufacturing of bearings, gears and transmission components; seal manufacturing; mold making; mold sales; manufacturing of general parts; machining of mechanical parts and components; sales of mechanical parts and parts; sales of mechanical and electrical equipment; general equipment manufacturing (excluding special equipment manufacturing); manufacturing of plastic products; sales of plastic products; retail of electronic components; bearing manufacturing; sales of seals; manufacturing of ordinary valves and cocks (excluding the manufacture of special equipment); sales of bearings, gears and transmission components; manufacturing of sporting goods and equipment; manufacturing of high-speed rail equipment and accessories; manufacturing of special equipment for the production of daily necessities; manufacturing of auto parts and accessories; sales of electrical accessories for new energy vehicles; valve and sales; sales of pumps and vacuum equipment; sales of battery spare parts; production of battery spare parts; research and development of new material technology; manufacturing of special equipment (excluding licensed professional equipment manufacturing); fastener manufacturing; fastener sales; manufacturing of gears and gear reductions and gearboxes; sales of gears and gear reductions and gearboxes; manufacturing of new energy prime mover equipment; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; import and export of goods; technology import and export; machinery and equipment leasing; Special equipment rental. (Except for projects subject to approval in accordance with the law, independently carry out business activities with a business license in accordance with the law)