Manufacturing of auto parts and accessories; wholesale of auto parts; manufacturing of bicycle parts; wholesale of bicycles and spare parts; manufacturing of mopeds; sales of mopeds, scooters and spare parts; sales of electric bicycles; manufacturing of motorcycle spare parts; wholesale of motorcycles and spare parts; manufacturing of plastic products; sales of plastic products; molds Manufacturing; mold sales; spray coating processing; metal surface treatment and heat treatment processing; metal cutting processing services; manufacturing of forgings and powder metallurgy products; sales of high-performance non-ferrous metals and alloy materials; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; import and export of goods; import and export of technology.