Production and sales: Metal Filter Membrane, ceramic filter membrane, polymer filter membrane and its filter equipment; provide, filter products technical services; Sales: sensors, meters, automatic control equipment, Non-ferrous metal and Non-ferrous metal products; Exports of goods and technology; New Filtration materials and products, new technology development, technical services, technical advice, technology transfer; engineering and Technology Research and development; cleaning, repair and regeneration services of filter apparatus and equipment. (for projects subject to approval according to law, business activities may be carried out only after approval by relevant departments)