Cartridge filter housing main applicable materials are: 1. Weak corrosive materials in chemical and petrochemical production, such as: water, oil, ammonia, hydrocarbons, etc. 2. Corrosive materials in chemical production, such as: caustic soda, soda ash, concentrated dilute sulfuric acid, carbonic acid, aldehyde acid, etc. 3. Low temperature materials in refrigeration, such as: liquid methane, liquid ammonia, liquid oxygen and various refrigerants. 4. Materials with hygiene requirements in food and pharmaceutical production, such as beer, beverages, dairy products, syrups, etc.