General business scope: Manufacturing of gas and liquid separation and purification equipment; Sales of gas and liquid separation and purification equipment; Sales of pumps and vacuum equipment; Manufacturing of pumps and vacuum equipment; Manufacturing of specialty chemical products (excluding hazardous chemicals); Manufacturing of general equipment (excluding special equipment); Research and development of mechanical equipment; Sales of special equipment for oil refining and chemical production; Sales of electrical equipment; Sales of mechanical equipment; Sales of power electronic components; Sales of hydraulic power machinery and components; Sales of electrical accessories; Sales of molds; Retail of hardware products; Sales of wires and cables; Sales of mechanical and electrical equipment; Sales of fire-fighting equipment; Sales of metal materials; Sales of mechanical parts and components; Import and export of technology; Import and export of goods; Manufacturing of instruments and meters. (Except for projects that require approval by law, business activities may be carried out independently in accordance with the law based on the business license)