... , ABS, stainless steel, and organic glass. 2) UF : Hollow fiber Features UF Membrane :1) Materials of shell: UPVC, ABS, ... -water, concentration and separation applied on chemical industries. ..UF membrane separating, concentrating and purifying substance has outstanding advantages ... pollution to separate2) Chemicals anti-corrosion, wide PH range.3) Simple separating process, easy to operate, low cost ...