Special equipment installation, modification and repair; road motor vehicle production general projects: general equipment manufacturing (excluding special equipment manufacturing); general parts manufacturing; hardware product manufacturing; hardware product wholesale; hardware product retail; metal tool sales; metal tool manufacturing; mechanical and electrical equipment manufacturing; mechanical parts and parts processing; mechanical parts and parts sales; motorcycle parts manufacturing; motorcycles and parts research and development; motorcycles and parts wholesale; motorcycles and parts retail; off-highway recreational vehicles and parts manufacturing; off-highway recreational vehicles and parts Sales; sales of mechanical and electrical equipment; sales of mechanical equipment; sales of metal products; sales of electric bicycles; maintenance of electric bicycles; bicycle manufacturing; bicycle repair; bicycle parts manufacturing; retail of bicycles and spare parts; sales of mopeds, scooters and spare parts; sales of bicycle spare parts; wholesale of bicycles and spare parts; moped manufacturing; motor vehicle repair and maintenance; sales of special equipment; import and export of goods; technology import and export; import and export agency; technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion