Manufacturing of special equipment for environmental protection; sales of special equipment for environmental protection; manufacturing of special equipment for plastic processing; sales of special equipment for plastic processing; processing of mechanical parts and components; sales of mechanical parts and components; manufacturing of metal processing machinery; sales of mechanical equipment; manufacturing of fans and fans; sales of fans and fans; manufacturing of motorcycle parts; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; manufacturing of auto parts and accessories; wholesale of auto parts; retail of auto parts; import and export of goods; import and export of technology.