Manufacturing of sporting goods and equipment; manufacturing of bicycle spare parts; sales of bicycle spare parts; manufacturing of off-highway recreational vehicles and spare parts; sales of off-highway recreational vehicles and spare parts; processing of mechanical parts and parts; manufacturing of auto parts and accessories; sales of mechanical parts and spare parts; research and development of metal products; metal products Sales; hardware product manufacturing; motorcycle spare parts manufacturing; general parts manufacturing; mold manufacturing; metal material sales; new material technology research and development; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; civil aviation material sales; goods import and export; technology import and export.