The business scope includes environmental protection technology development, technology promotion and technical services; Sales of water treatment agents, metallurgical chemical raw materials, glass raw materials, polyacrylamide, chemical products (the above five items do not include dangerous, monitoring and precursor chemicals), aluminum hydroxide, polyaluminum chloride, aluminum oxide, calcium aluminate powder, soda ash, activated carbon, water treatment equipment and accessories, building materials, hardware products, daily necessities, and craft gifts; Water treatment technology services; Import and export of goods and technology. (for projects subject to approval according to law, business activities can be carried out only with the approval of relevant departments)