A Set HID™ Water Purifier Filter Element include PP Sediment Filter, Granular Carbon Filter (GAC), Carbon Block Filter (CTO), HID™ RO Membrane, Post Carbon Filter. It has won the trust of thousands of families for feeding the reliable purified water over 10 years. Each membrane is made of HID developed & pre-examined sheet and goes through stringent making processes as well as in-house quality inspection & testing before delivery. HID Membrane has been certified by SGS & China Jiangsu Sanitation Bureau wrt drinking water membrane elements. PP filter filtration of colloidal impurities, micro mud, rust, insect eggs, organic contaminated mineral debris, etc. with a diameter greater than 5 microns in tap water. The fibers randomly form a three-dimensional microporous structure in the space, which can trap impurities of different particle sizes. Light spot: 1. 100% pure PP material 2. High dirt holding capacity 3. wide chemical compatibility 4. One-piece construction Light spot: 1. 100% pure PP material 2. Integrated cap 3. High-grade material 4. High quality activated carbon 1. The GAC filter element can be compacted by filling with activated carbon filter material and a specially designed sponge inside. The PP melt-blown filter layer at the end of 20um can effectively prevent the fine particles from seeping out. 2. GAC filters can effectively filter out different colors, odors, residual chlorine, colloidal substances, and volatile organic compounds in water. 3. GAC filters can effectively inhibit the growth of bacteria. Light spot: 1. 100% pure PP material 2. Integrated cap 3. High-grade material 4. High quality activated carbon "Sincerity, Innovation, Rigorousness, and Efficiency" is definitely the persistent conception of our enterprise for the long-term to create together with buyers for mutual reciprocity and mutual advantage for RO Cartridges, RO Filter, Water Filter Set, We warmly welcome you to come to visit us personally. We hope to establish a long-term friendship based on equality and mutual benefit. If you want to get in touch with us, be sure to do not to hesitate to call. We'll be your best choice. info@ro-hid.com