Smoke exhaust fans are widely used in fire rescue, emergency operations, underground spaces, building fire scenes, tunnels, warehouses and other scenarios. Powered by strong airflow, they displace high-temperature dense smoke at fire sites, exhaust toxic fumes and draw in fresh air. The equipment lowers on-site temperature and improves visibility, creates safe passageways for rescuers, and reduces risks of smoke poisoning and suffocation. It serves as core equipment for emergency rescue.