Portable dry powder fire extinguishers The working principle of dry powder fire extinguishers is to use compressed carbon dioxide to blow out dry powder (mainly sodium bicarbonate) for fire extinguishing. The advantages of dry powder fire extinguishers are: good liquidity, high jet rate, non -corrosive container and not easy to deteriorate. In addition to extinguishing the average fire, it can also be used to extinguish the fire caused by oil and qi. Its dried powder is a micro -fine powder with liquidity, mainly inorganic salts, and a mixture composed of some additives. Dry powder fire extinguisher benefits 1.dry powder fire extinguishers are generally used in oil, organic solvents and other liquids produced by the fire scene. In addition, dry powder fire extinguishers are very useful in the initial ignition of electrical equipment and combustible gases. 2.dry powder fire extinguishers are also divided into two types, a dry powder fire extinguisher is sodium bicarbonat…