Industrial automatic control system devices, motorcycle accessories, auto parts, metal accessories for construction and furniture, mechanical remote control operating devices, machine tools, power electronic components, electric tools, pneumatic tools, hand tools, metal tools for agriculture and gardening, motors, and pump technology research and development, manufacturing and sales; computer network technology development and promotion services, new material technology research and development and promotion services; sales of electronic products and chemical products (excluding dangerous and precursor chemicals); wholesale and retail of steel products; import and export of goods, import and export of technology.