... 0.3 microns like allergens, pollens, dust, pet dander and more. HEPA technology has been developed by the ... , Auto, Bedroom, Living room, Cookroom, Hospital, Etc..·Filters: Cotton filtering effect early, HEPA Filter, Activated Carbon and Photocatalytic ... Depending upon usage, Cotton filtering, HEPA and Carbon: 3 to 6 months, Photocatalytic: 12 months.·MOQ: 500pcs. Household Equipment----- Air Purifier