... environmental protection and electronics, as well as air purification and disinfection.1. Acid purification, such as hydrochloric acid, vitriol, hydrofluoric ... acid and phosphoric acid, etc.2. Alkali purification, such as sodium hydroxide and sodium sulphide, etc.3 ... juice, beer, distilled spirit and sauce, etc. 4. Purification of industrial oil, such as benzene, diesel oil, aviation ...