RO membrane 1.Good quality and strong OEM 2.Good after sales service 3.high dirt-holding capacity 4.long life RO ... W.:8G.W.:9Main configurationThe domestic RO system membrane is made of the semi-permeable membrane with the 0.001micron filtration precision ... ,according the water output capacity,the different membrane is available as follows :35GPD,50GPD,75(80) GPD,100GPD,200GPD RO membrane cartridge