... metal, organic compound, bacteria etc. harmful substance for human body.2.Ultraviolet ray (UV)24 hours non-stop sterilizing, ensure water hygiene3 ... RO membrane treatment technology, deion rate is above 99%. Equipped with perfect pre-treatment and post-treatment filters, can produce drinking ... charging mode, precision can reach 0.01. Auto water venderMachine with coin and IC card for Drinking Water