... an independent sub-structure UV air sterilization,HEPA,photo catalyst,Activated carbon, ions air purifier and humidifier:Model:B-828Product size:193 ... :adsorp the nona-particulate with efficiency more than 99.97%Activated carbon:adsopt all kinds of harmful gas and odors.6 air ... area of humidity 30%,UV air sterilization,HEPA,photo catalyst,Activated carbon, ions air purifier and humidifier