... filtration,to remove calcium and magnesium in the water, let drinking water to be pure, let your trouble away ... .9th Anion filter Active the water, make he water become antioxidant water.10th Magnetized filterMagnetized water,keep the activity of the ... you have any questions about our products ( water softener, control valves, RO water purifier, Residential reverse osmosis machine ) or our service ...