Rubber product manufacturing; rubber product sales; seal manufacturing; seal sales; general parts manufacturing; mechanical parts and parts processing; mechanical parts and parts sales; metal cutting processing services; metal product research and development; metal product sales; metal structure manufacturing; metal structure sales; mold manufacturing; mold sales sales; new material technology research and development; new material technology promotion services; manufacturing of special chemical products (excluding hazardous chemicals); sales of special chemical products (excluding hazardous chemicals); sales of new catalytic materials and additives; sales of chemical products (excluding licensed chemical products); manufacturing of special equipment for oil drilling; oil drilling Sales of special equipment; technical services for oil and gas; urban greening management; construction of landscaping projects; municipal facilities management; manufacturing of special equipment for environmental protection; sales of special equipment for environmental protection; research and development of mechanical equipment; sales of mechanical equipment; research and development of auto parts; manufacturing of auto parts and accessories; and batch of auto parts Development; retail of automobile parts and components; research and development of motorcycles and parts; manufacturing of motorcycle parts and components; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; battery sales; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; import and export of goods; technology import and export; import and export agency. Licensed items: Inspection and testing services.