... .The Air Cleaning Stages: 1st stage starts with Cotton filtering effect early.2nd stage is an Mini-HEPA Filter3rd stage consists ... , Auto, Bedroom, Living room, Cookroom, Hospital, Etc..·Filters: Cotton filtering effect early, HEPA Filter, Activated Carbon and Photocatalytic.·UV: 254nm (20 ... Carbon: 3 to 6 months, Photocatalytic: 12 months.·MOQ: 1000pcs. New Design Indoor UV Air Purifier