... 2.Dow, Hydranaustic membrane 3.Stainless steel RO drinking water device, RO filter1.Reverse osmosis water2.Dow, Hydranaustic membrane3.Stainless steelpure ... is PLC program controlled. Installed with conductivity meter monitor,pressure gauge and flow meter. Matching equipment:original water pump,mechanical filter, ... operation simple, the applicability is strong High effciency water filter device