... 3.under sink type 4.with booster bump 5.ISO9001/ISO14001/CE 5-stage RO system 50GPD water purifierBrief Introduction1) ... Under sink type, with lined tube and plastic bracket2) Cross valve / 4- ... smell, remained Chlorine, trichloromethane, sand, suspended material and colloid.Stage 4: RO components. Adopt the membranes imported from US. It ...