General items of goods import and export: mechanical parts and parts processing; general parts manufacturing; general equipment manufacturing (excluding special equipment manufacturing); mold manufacturing; mold sales; metal structure manufacturing; hardware product manufacturing; hardware product retail; bearings, gears and transmission parts manufacturing; bearings, gears and transmission parts sales; Manufacturing of industrial automatic control system devices; manufacturing of hydraulic power machinery and components; sales of pneumatic power machinery and components; sales of hydraulic power machinery and components; sales of metal materials; sales of building materials; sales of machinery and equipment; sales of bearings; sales of mechanical parts and components; research and development of motorcycle parts; retail of motorcycles and spare parts