... wind 2)Fan,4speed,nanometer activity ion 3)LED display,RC,Moving,Humidify 4)CB,CE,EMF,OEM,ODM XITIAN AIR PURIFIER HELP ... YOUR DIRTY AIR 1. Precise dust removal material used for experiment; Obliterate dust.For the room dust ,we select HEPA (high efficiency ... particulate air filter) as the best HEPA material which internationally accepted, it is ...