What is the fire extinguishing principle? Brief introduction of fire extinguishing principle.

1, cooling. Reduce the temperature below the ignition point of combustible materials.

2, suffocation. It is to remove the oxygen needed for combustion.

3. Isolation. It separates combustion products from combustion-supporting substances. For example, sodium burns in water, but it won't burn if it is separated.

4. inhibition. This is a chemical method to destroy the intermediate of combustion reaction.