Uses: 1. Bactericide and algaecide in swimming pool, spa and pond, and bacteria and algae inhibitor. The product is a strong cationic polymeric biological bactericide, which can effectively inhibit the growth of a variety of algae in swimming pools, ponds and reservoirs and kill algae. It has the function of flocculation and clarification. It can be used in acidic, alkaline and high hard water environment. 2. Cleaning agent for food processing industry. The products have unique applications in food industry cleaning agents. It can be used as equipment cleaning agent in dairy farm, chain lubricant in brewery, etc. It can clean, sterilize, prevent mildew and prevent the formation of biological mucosa. 3. Sterilization and algae removal of industrial cooling circulating water and air conditioning cooling water. Effectively inhibit the formation of algae, mucus and sludge in industrial circulating cooling water. Reduce industrial drainage and water replenishment, and save energy and environmental protection. Initial addition: 20 ~ 30 ppm, additional dose every two weeks: 5 ~ 10 ppm. 4. Oilfield water injection bactericide, clay anti swelling agent and tackifier. When used in combination with ammonium chloride, it has a better stabilizing effect on clay minerals. When used as shale inhibitor of cationic drilling fluid, the dosage is 0.5% ~ 1.0% 5. Surfactant uses. It is used to prevent fog on glass surface and eliminate static electricity of synthetic fiber, silk, wool and other fabrics.