Manufacturing of glass fiber reinforced plastic products; sales of green composite materials for rail transit; sales of special equipment, key systems and components for rail transit; research and development of new material technology; retail of auto parts and accessories; manufacturing of auto parts and accessories; research and development of auto parts; sales of special electronic materials; manufacturing of special electronic materials; research and development of special electronic materials; manufacturing of plastic products ; Manufacturing of engineering plastics and synthetic resins; sales of plastic products; sales of glass fiber reinforced plastic products; sales of engineering plastics and synthetic resins; technical services, technology development, technical consultation, technology exchange, technology transfer, and technology promotion; manufacturing of power electronic components; sales of power electronic components; research and development of motorcycles and parts; information consulting services (not (Including licensed information consulting services); leasing services (excluding licensed leasing services); bio-based material manufacturing; bio-based material sales; synthetic material manufacturing (excluding hazardous chemicals); synthetic material sales; high-performance fiber and composite material sales; high-performance fiber and composite material manufacturing; ecological environment material sales; ecological environment material manufacturing; biology Basic material technology research and development; civil aviation materials sales; new material technology promotion services; coating sales (excluding hazardous chemicals); rubber product manufacturing; rubber product sales; corporate management consulting; corporate management; business agency services; import and export agency; cargo import and export; conference and exhibition services; property management; procurement agency services; technology import and export.