... with cordwood system type 2. Produced by standardization. CFY-150 ozone air purifier can use for fresh keeping, room disintecting and so on ... : CFY-150 ozone air purifier takes oxygen as gas source (Need to additionally match air compressor and cold & dry machine and oxygen generator), and make ... ,50,100,150,225,300,500.2. CFZY series (air source) ozone generator: CFZY-3,6,12,24,50,100,150,225,300 ...