FY-12 oxygen concentrator: 1. Produced by standardization. 2. Be convenient to ... : 1. CFY series (oxygen source) ozone generator: CFY-3,6,12,24,50,100,150,225,300,500.2. CFZY series (air ... source) ozone generator: CFZY-3,6,12,24,50,100,150,225,300,500.3. CHYS series ozone ... requirements, we also can costomize for you. Oxygen Concentrator (FY-12 )