75GPD RO Membrane Technology USA Membrane sheet Japan capacity:50/75/100/1500gpd RO MembraneTechnology USAMembrane sheet Japancapacity:50/75/100/1500gpdIt is made of the semi-permeable membrane with the 0.0001 miconfiltration precision for separating and removing the bacteria, heavymetal, salt,bad mineral substance and other dissolved matter and chemical drug in the running water 75GPD RO ...