Ultra-filtration (UF) is a membrane separation technique that cleans and separates solutions. Anti-pollution PVDF ultrafiltration membrane uses polymer material polyvinylidene fluoride as the main film raw material, PVDF membrane itself has strong oxidation resistance, after special material modification and has good hydrophilicity, in the process of membrane through scientific micropore design and micropore structure control, micropore pore size reaches the ultrafiltration level. This kind of membrane products have the advantages of uniform pores, high filtration accuracy, high water penetration per unit area, oxidation resistance and high tensile strength.