Product Category - Reverse Osmosis System water purifier Certification - Water Quality Association [USA] Storage Tank : 7 ltr Plastic tank Stages: 1. Inline Sediment Cartridge, make NW 2.Inline Per Carbon Cartridge, make NW 3. S-valve, make Yong Chuang 4. Booster pump 36V, make NW 5.SMPS 1.5 ampsadaptor 36V 6.Membrane AWS 75 GPD BW NW 80 GPD TW 7.Inline Post Carbon Cartridge, make NW 8.FR