Copper-Zinc-Alloy: Removes the heavy metal molecule including Lead, Mercury, Copper, Aluminum etc. Calgon coconut activated carbon: Have great absorption of chlorine, color, odor, organic chemicals and improve taste of water. Ion exchange resin: Efficiently soften water, totally avoid the scale. Mineralizing material: Release various of beneficial microelement such as Zinc, Manganese, Lithium, Molybdenum, Silicon and Boron etc. Common water becomes into mineral water with Alkalescence. Easy to install and maintain. Counter of serving times equipped.