air purifier: A. 7 stages purifycation systems B. ionic air cleaner with washable HEPA and UV C. .big ... , dust, pollen, smoke, fume, mildew, etc. Model# HMA-300/CHO Serials Specification:Negative ion + UV light + Tio2 photo catalytic ... more durable and elegantWith stainless steel rack, long-lastingNo ozone produced!Washable and replaceable HEPA filterReplaceable catalytic filterLong-lasting UV ...