Features: gas fire extinguishing agent is a mixture of nitrogen, argon and carbon dioxide gases by a certain percentage of a mixture of gases, these gases are naturally present in the atmosphere, depletion of the ozone layer is not, nor will the Earth's "greenhouse effect "impact, and mixed gas non-toxic, colorless, tasteless, non-corrosive, non conductive, not support combustion nor react with most substances, is an ideal environmentally friendly extinguishing agent. 

 Practical range: can be used to put out electrical fire, liquid fire or melting of solid fire extinguishing fire and solid surface can be cut off gas supply before the gas fire. Mainly for computer room, communications room, power distribution room, transformers, owned generator room, library, archives, museums and notes, heritage databases has often been a place of work. 
 Note: mixture of gas extinguishing agent can not be used for fighting Class D metal fires lively.