Manufacturing of auto parts and accessories; manufacturing of motorcycle parts; wholesale of auto parts; retail of auto parts; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; research and development of mechanical equipment; sales of mechanical equipment; processing of mechanical parts and parts; sales of mechanical parts and spare parts; sales of building materials; sales of bamboo products; sales of cork products; sales of daily wood products sales; sales of non-metallic minerals and products; sales of metal ores; wholesale of hardware products; retail of hardware products; sales of chemical products (excluding licensed chemical products); sales of knitted textiles; wholesale of stationery supplies; retail of stationery supplies; sales of office supplies; sales of office equipment; sales of electronic products; sales of communication equipment; import and export of goods; import and export of technology; import and export agency.