air purifier: A. 7 stages purifycation systems B. ionic air cleaner ... , more durable and elegantWith stainless steel rack, long-lastingNo ozone produced!Washable and replaceable HEPA filterReplaceable catalytic filterLong-lasting UV ... to the finished product. · We have serial products: ozone tube ,UV water sterilizers, ozone generators, oxygen concentrators, protein skimmers, and filters, mixing ...