American carbon dioxide extinguisher: 1.high quality and standard 2.can put out fire with B,C,E class 3.OEM service American style portable CO2 fire extinguisher made by Al :1.high quality and standard with CE TUV certification2.can put out fire with B,C,E class3.material:34CrMo44.test pressure:250bar5.working pressure:174bar6.temperature range:-30~60degrees7.min wall-thickness:2mm/2.6mm