Osmosis Drinking water purification system 1.reverse osmosis device 2.stainless steel frame 3.manual or automatica system Reverse osmosis ... materials, germ, protozoa, pathogens, bacteria, inorganic chemical and so on. 2) No need to add any chemicals, stable pure water quality ... whole system is long, operation simple, the applicability is strong All-In-One Reverse Osmosis Pure Water Making Machine