General items of import and export of goods under state-owned trade management: manufacturing of auto parts and accessories; R&D of auto parts; wholesale of auto parts; retail of auto parts; manufacturing of hardware products; wholesale of hardware products; retail of hardware products; R&D of hardware products; manufacturing of plastic products; sales of plastic products; import and export of goods; Technology import and export; import and export agency; bicycle manufacturing; wholesale of bicycles and spare parts; retail of bicycles and spare parts; sales of mopeds, scooters and spare parts; sales of electric bicycles; manufacturing of motorcycle spare parts; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; research and development of motorcycles and spare parts