Faucet Water Purifier with Hi-Tech Ceramic Cartridge ThreeStages:CeramicsCartridge+Nano-KDF+High-qualityActivatedcarbon Cleanmethod:Unscrewandremovethecartridge,rinsesurfaceofcartridgewithScouringPadorWaterproofAbrasivePaper,afterremovingandflushingthedirtonthesurface,installthecartridgebacktothefaucetwaterpurifier.Welcome to visit our website to learn more about us: http://www.sz-tswater.com/