Ultrafiltration (UF) is a membrane separation process that takes screening as the separation principle and pressure as the power to achieve mechanical separation. Under a certain pressure, the solute is separated, so as to achieve the purpose of purification, separation and concentration. PES hollow fiber ultrafiltration membrane produced by our company is an important separation membrane form, which has the advantages of the largest effective area, high filtration and separation efficiency, convenient cleaning, strong pollution resistance and strong cleaning. Our company can provide PES,PAN and PVDF ultrafiltration membranes, which can be widely used in various contaminated water treatment industries.