... , pharmacy, chemical industries, foodstuff, drinking water. 4.1 year guantee ro water treatment system Use:Cosmetic, pharmacy, chemical industries, foodstuff, drinking ... no water, Auto backwash, IC microcomputer control system, auto backwash RO fil, raw water and well water conductivity is displayed on ... 0.1-1.0us/cm reaches to ultra-pure standard.RO-500A0.5A2.2500.1-1.0RO-10002.03.075≤10RO ...