Ion-exchange

(1). Ion-exchange, process is in the following:
Raw water -raw water pump- multi-media filter-activated carbon filter- Softener-accurate filter-positive resin filter bed -negative resin filter bed -mixed bed columns- microporous filter- required water
(2). 2 pass reverse osmosis, process is in the following:
Raw water -raw water pump-multi-media filter- activated carbon filter- Softener- accurate filter-1 pass reverse osmosis- PH adjuster - middle water tank-2 pass reverse osmosis- pure water tank-pure water pump-microporous filter-required water
(3). EDI, the process as following:
Raw water -raw water pump- multi-media filter- activated carbon filter- Softener- accurate filter- 1 pass reverse osmosis-middle tank-middle pump-EDI system-microporous filter- Required water

you can choose it freely