Xi'an has a high density of carbon dioxide fire extinguisher, about 1.5 times that of air. At atmospheric pressure, the carbon dioxide will be immediately vaporized liquid, generally produce 1kg of liquid carbon dioxide of about 0.5 cubic meters of gas. Thus fire extinguishers, fire extinguisher maintenance when carbon dioxide gas can be ruled out on the surface of the combustion air and surrounded by objects or distributed in relatively confined space fire extinguisher manufacturers, reducing the oxygen concentration of combustible materials around the fire extinguishers or protective space, resulting in suffocation and fire . In addition, carbon dioxide is discharged from the storage container, will be made of liquid rapidly vaporized gas, and attract some of the heat from the surroundings, play a role in cooling. Xi'an hydrant systems: fire hydrant alarm button manual operation start of the layer or the upper and lower control alarm or audible alarm output module turned on or audible alarm bells off. Fire hydrant Manual alarm button action to start the fire pump. Fire extinguishers price, Yan'an fire extinguishers, [Shaanxi] provided by the designated brand Jiwei Fire Equipment Co. Shaanxi. Shaanxi Jiwei Fire Equipment Co. (www.jiweixiaofang.com) (www.jiweixiaofang.com) strong, credible, in other industries, Xi'an has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shaanxi JW firefighting equipment into the brilliant and you work for a better future!