Manufacturing of motorcycle parts and accessories; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; research and development of motorcycles and spare parts; wholesale of automobile spare parts; retail of automobile spare parts; tire manufacturing; tire sales; rubber product manufacturing; rubber product sales; synthetic material manufacturing (excluding hazardous chemicals); synthetic material sales; import and export of goods; new material technology research and development; auto parts and accessories manufacturing; auto parts research and development; new material technology promotion services.