... HEPA,Anion,Healthy wind 2)Fan,4speed,nanometer activity ion 3)LED display,RC,Moving,Humidify 4)CB,CE,EMF, ... Obliterate dust.For the room dust ,we select HEPA (high efficiency particulate air filter) as the best HEPA material which internationally accepted ... . Advanced noise suppression technology, mute sounds working. 3 Automatic function design, display air quality in the room automatic 4 LED display ...