... Specification1.1-6stages2.PP,pre-carbon,Compression activated carbon,RO,post-carbon,Mineralization filter3.microcomputer control4.Housing size:29. ... 1/4",1/2",3/4",1"10.Accessory:wrench, faucet, pipe, valve11.Applications:Home,Office,Hotel Feature 1.High grade ... RO membrane separation technology2.Food grade material ensure safest water ...