*It has a role of RO velum in the machine which filter bacillus and most of other harmful element from the final pure water again and again. *It?s very convenient to take the fresh and high- quality water. At anytime, the water you drink is made on extempore. Feature:*floor standing *hot & warm water Dimension: 42*41*106 Shipping: 30days 130/20?;280/40? Unite price:USD160 FOB SHENZHENno negotiated (ten model under this style,including thermo-chill and compressor refrigeration,desk-top and floorstanding,16L 28L 50L.)