6 stages filtration system: Pre-filter + HEPA filter + Activated carbon filter +  Photo-catalyst filter + UV germicidal light + ionizer

 99.97% HEPA filter can filtrate 0.3um particles like farina, pet dander and smoke Remove dust, allergens and pet dander

UV germicidal light was found effectively destroy microorganisms and  Kill germs, viruses and bacteria

Negative ion: 3 x 10(6)/ cm3