... on diffusibility and reducibility.without residual and pollution but with prominent function of chemical toxins,eliminating odors,decolorizing and ... of HEPA,filter the air at a medical level.5).Nanometer photocatalyst purifies the airBy the advanced Tio2 photocatalyst, ... (formaldehyde,ammonia,benzene,TVOC,Etc.)in the air are decomposed.6).UV Kills germs,with sterilization lamp The working mechanism ...