... cordwood system type 2. Produced by standardization. CFY-150 ozone air purifier can use for fresh keeping, room disintecting and ... CFY-150 ozone air purifier takes oxygen as gas source (Need to additionally match air compressor and cold & dry machine and oxygen generator ... air source) ozone generator: CFZY-3,6,12,24,50,100,150,225,300,500.3. CHYS series ozone water treatment machine (Integrate ozone ...