... , RO filter 1.Reverse osmosis water 2.Dow, Hydranaustic membrane 3.Stainless steel Water apparatus: This is ... systems ,cleaning system, high and low pressure protection system ,automatic liquid level control system ,automatic alarm system ,automatically stop ... 2) No need to add any chemicals, stable pure water quality, and no pollution drained, low produce cost. 3) Equipped with pretreatment system ...