Fire Exhaust Axial Flow Fans are generally used for fire protection, designed to exhaust smoke during the early stages of a fire. They are heat-resistant and are typically designed to operate normally for 30 minutes at a temperature of 280 degrees Celsius. Fire Axial Flow Fans include both Exhaust Axial Flow Fans and Supply Axial Flow Fans (which are symmetrically constructed), one for exhaust and the other for supply. The Supply Axial Flow Fan is also known as a Fire Make-up Axial Flow Fan in the professional field. Appendix: Axial Flow Fan Working Principle - Axial Flow Fans have a wide range of applications, where the airflow is in the same direction as the fan's shaft, such as in electric fans and outdoor fans of air conditioners, which are operated in an axial flow manner. The term "axial flow" is used because the gas flows parallel to the fan's axis.