What kind of extinguisher is not available?
The type of extinguisher does not conform to the type of fire extinguishing, and can not be used (dry powder fire extinguisher, foam fire extinguisher, carbon dioxide fire extinguisher, different type of scene, fire extinguisher must be matched)
Fire extinguisher cylinder over service life (usually 10 years), can not be used
There is a year on fire extinguishers, expired can not be used (usually one year a check, so in general, it is a one-year warranty);The pointer cannot reach the red area on the barometer;
