The hollow fiber ultrafiltration membrane we offer adopts modified PES as basic raw material. The PES is processed with hydrophilization treatment; our hollow fiber membrane for ultrafiltration has higher water flux and better antifouling property. MEMFILL has various types of membrane which has different molecular weight cut off (MWCO) up to ~ 100,000 Dalton; our product can be used for the removal of microorganism, colloids, algae and other impurities that may cause turbidity.