Why are antifreeze fog cannons used?

Because in some regions, the temperature is relatively low in winter. There may be some residual water before and after the use of the fog cannon. If the water is frozen into ice, it will affect the use of the fog cannon.

What is the principle of an antifreeze fog cannons?

We add a layer of heat tracing tape to the water pipeline of the fog cannon, ensuring that the temperature is above 0 degrees Celsius before using the fog cannon.