water purifier,five-step purify, first is pp,second&third are carbon,forth is RO,it get rid of bacterium,price is lowest. water purifierFive-step First filtering:Fibre filter core filters sand, iron rust and other grains. Second filtering:Granule active carbon absorbs special smell chlorine remains, pesticide remains and so on. Third filtering:Fibre filter core filters small materials less then 1 ...