... two times sterilizing ensure water clean and safe for drinking4. With ozone washing bottle before filling, to prevent second hand pollution ... life time longer and prevent stolen6,100% water proof design, with good painting outlook7,Water selling price can be adjustedA: Design ... particles, and taste well.2,RO membranes modelRO-2021,with desalination rate of 98%,recovery can reach to 50-75%. Except ...