... .auto water vending machine 2.coin, IC card payment system 3.UV, ozone sterilizing 4.Capacity: 400~1300GPD 5.6 steps ... membrane. Then through mineralization treating, living ozone sterilizing, 24hours UV sterilizing. Sand, corrosion, heavy metal, bacteria, residual chlorine ... pump will auto stop.9. more safe and reliable electrical system design, added RO membranes auto rinsing, low water pressure ...