Remove hardness substance (Ca, Mg) in water. Use of safety material of EWG 1 grade. Long Term Use for adsorption and ion exchange. It does not pollute the secondary environment Remove Nitrogen for the Ammonia. Eliminates toxic substances, such as organic ions, decaying organic compounds, and odors, and absorbs powerful anions and rays by producing powerful anions and emitting large amounts of dissolved oxygen. For household water purifier filters and industrial use. Our water purifier filters are as follows. - Vitamin C Filter - Water softener Filter - hydrogen generation filter - Alkaline mineral filter (for RO filter supplement) - Shower filter Carbomax thinks about the environment, Drafter We use natural materials to make filter media and there is no secondary environmental pollution. Also, there is no harm to the human body because it does not use chemical products.