YUNDA FILTER CO. is a professional manufacturer about water filter elements.Using NSF certified granular activated carbon. It is designed for the removal of objectionable tastes, chiorine, unpleasant odor, color spore, lead, and microorganisms. At the same time, it keeps high flow. After special and harmless processing, the GAC cartridge has no carbon granules or black water releasing. As an effective adsorbent for a wide variety of organic contaminants, such as herbicides, pesticides, industrial chemicals. Natural pure coconut shell carbon has a better filtration effect to removing trihalomethanes and other chemicals.