12 1 1 fire extinguishers (but they are not produced at present because of the gas that will destroy the ozone layer) and carbon dioxide fire extinguishers have good fire extinguishing effect. The most important thing is not to pollute and corrode books and files.

Supplementary note: CO2 without fire extinguisher competes with CO2 released by combustion.

Fire extinguishing mechanism of carbon dioxide: 1 A large amount of carbon dioxide surrounds the fire source, which inhibits the continuous replenishment of oxygen and achieves the purpose of fire extinguishing. This is called suffocation and fire fighting; Carbon dioxide exists in fire extinguishers and is liquid. After being put out, it is quickly converted into gas, which can absorb a lot of heat from the fire source and force the temperature of the fire source to drop below the ignition point, thus playing a role in extinguishing the fire. This is called cooling fire extinguishing.

So it is reliable to put out the fire with carbon dioxide.