1)Diagram of Water Flow Sediment Filter Pre-treatment Sediment Filter maximized the effect of purification from the initial stage by eliminating minute impurities with the size down to 1 μm such as rust, soil, sand and dust. Pre-Carbon Filter Pre-Carbon Filter that used absorption method of carbon makes water, which is close to natural water by absorption and elimination of organic chemicals such as chlorine ingredient (tri-halo-methane) and smell as well. Post-Carbon Filter Post Carbon Filter makes clean water without color and taste by preventing the propagation of bacteria and eliminating unpleasant smell, taste and pigments permeated in water. Ceramic Membrane Filter It is a condensed version of silver containing special ceramic by hundreds of thousands of folds. Each fold has uniform pores of 0.2 μm, which serve to eliminate germs, heavy metal particles and radioactive materials.