Innovative composite filter: Gree adopts activated carbon+ultrafiltration membrane composite filter, which can directly filter bacterial viruses through ultrafiltration membrane, and it is a physical filtration method, which avoids by-products produced by chemical filtration and is safer and cleaner; Humanized water leakage protection technology: at the joint of the pipeline that is prone to water leakage, Gree water purifier installs a leak detection chip to stop water supply immediately when water leakage occurs, effectively preventing accidents; Built-in pressure reducing valve: it can control the pressure within the application range of the water purifier, reduce the damage of various parts of the water purifier, and thus effectively prolong the service life; Filter element replacement reminder: high-precision flowmeter is used to count the use flow of filter elements at all levels. When any filter element reaches its service life, the water purifier will intelligently prompt to replace the corresponding filter element, and can lock the water purifier to stop making water, so users do not need to worry about whether the filter element expires; Intelligent flushing of filter element: after long-term use, reverse osmosis membrane will deposit a lot of impurities on its surface, which will reduce its performance. Gree water purifier has the function of washing the filter element regularly, which can clean the membrane surface in time to ensure the purity and freshness of the effluent; DP water-saving patent: adopting DP water-saving patent technology, double-switch control saves water and saves electricity; Imported filter element: The reverse osmosis membrane filter element of Gree water purifier uses Dow RO membrane from the United States, and its activated carbon filter element, ultrafiltration membrane filter element and reverse osmosis membrane filter element have all been certified by NSF, an authoritative organization in the field of health and safety in the United States, with excellent performance, safety and reliability.