Portable carbon dioxide fire extinguisher is a new type of fire extinguishing equipment, which can be used to extinguish initial fire. the carbon dioxide extinguisher is filled with carbon dioxide extinguishing agent, non-toxic, tasteless, well insulated, and can be stored for a long time. Carbon dioxide fire extinguishers are applicable to vehicles, ships, mines, warehouses, stores, institutions, schools and office buildings, and are necessary fire-fighting equipment for fire prevention.