Manufacturing of auto parts and accessories; manufacturing of motorcycle parts; sales of metal products; manufacturing of hydraulic power machinery and components; processing of mechanical parts and parts; sales of plastic products; sales of metal materials; research and development of auto parts; retail of auto parts; retail of motorcycles and parts; manufacturing of hardware products; wholesale of hardware products; sales of hydraulic power machinery and components; manufacturing of pneumatic power machinery and components; sales of pneumatic power machinery and components; import and export of goods; import and export of technology.