TAO is a water purifier that is compatible with many types of shower faucet devices in the market. The cartridge filter element designed with its high filtration efficiency filter element is installed inside for users to easily install it in the bathroom. Compared with ordinary competitors that can only remove particulate matter such as rust, TAO can effectively filter impurities and bacteria up to 99.9%. Small size, high water purification efficiency, and easy installation and use are its advantages.