Nano-metal clusters media (Nano-KDF): Highly effciently removal of residual chlorine; Highly efficiently removes heavy metal ions in water such as Pb2+, Cd2+, Cr6+, As3+, etc. Decreasing the concentration of oranic pollutants and F-,Hg+,MH3,N02-,in water. Micro-organisms groeth and reproduction can be inhibited and eliminated. activated carbon core: Reduces unpleasant tastes and odors. Tourmaline ceramic filter Cartridge : Releasing negative ions, negative ionizing water immediately. Rich in minerals and microelements,activating the water. Rmoval of rust,worms,algae and other suspended contaminants.