Manufacturing of rubber products; sales of rubber products; manufacturing of seals; sales of seals; manufacturing of plastic products; sales of plastic products; manufacturing of synthetic materials (excluding hazardous chemicals); sales of synthetic materials; manufacturing of auto parts and accessories; retail of auto parts; auto parts research and development; auto parts wholesale; auto parts remanufacturing; mechanical parts and parts processing; sales of mechanical parts and parts; motorcycle parts manufacturing; wholesale of motorcycles and parts; molds Manufacturing; mold sales; manufacturing of high-performance fibers and composite materials; sales of high-performance fibers and composite materials; technical services, technology development, technical consulting, technology exchange, technology transfer, technology promotion; manufacturing of special equipment for rubber processing; sales of special equipment for rubber processing; import and export of goods; import and export of technology; non-residential real estate leasing; leasing services (excluding licensed leasing services); corporate management consulting; general parts manufacturing; mechanical equipment sales; mechanical equipment research and development