The core filter element adopts Dow filter element imported from the United States, which has high filtration accuracy; The filtering effect is stable; Long service life. Activated carbon adopts imported cola, food-grade material and heavy metal pollution; Strong adsorption capacity and good taste of water. PP cotton for 6- 12 months, granular activated carbon 12- 18 months, ultrafiltration membrane for 24-36 months, Dow filter element imported from the United States for more than 36 months, at least 3 years, long service life, super stability, activated carbon12-/kloc-. In order to ensure the use effect of the water purifier, the filter element should be replaced regularly to ensure the permanent enjoyment of pure water quality. The cycle of filter elements at all levels varies according to the water quality and water consumption. So how often you change it depends on what filter element your water purifier is.