Henan zhanglong environmental technology ltd. Is registered at the 188 u. S. West road in zhengzhou city, henan province, with the registration authority zheng yi city market supervision authority, with legal representatives, and operates on the basis of the production and sale of: water purification materials, filters, water treatment fillings; sales of polyacrylate, polymeric aluminium, polymetallic sulphate, alumina polymer, iron sulphate, activated charcoal, fire-resistant materials, building materials (other than hazardous chemicals), hardware exchange, metal products, chemical products (other than hazardous chemicals), electronics, plumbing accessories, mechanical equipment and accessories; construction of environmental works; import and export of goods or technology (with the exception of goods and technology whose import and export are prohibited or subject to administrative approval by the state)。