RO water filter: PP Filter, GAC granual activated carbon, carbon bloc, RO membrane,coconut carbon RO water filterItem No.:R-300BStage 1,20" 5 micron PP FilterStage 2,20" GAC granual activated carbonStage 3,20"1 micron carbon bloc,Stage 4,20"Reverse Osmosis Membrane (CSM RO membrane/Filmtec RO membrane/Vontron RO membrane)Stage 5,Inline post carbon(coconut odor and test)11G white matel tankAuto ...