A smoke exhaust fan is a mechanical device that quickly removes odors, high temperatures, and smoke gases generated during the food processing in a kitchen. The machine features excellent high-temperature resistance and high efficiency. The types of fans include centrifugal fans and axial fans, and the appropriate size of the machine is chosen based on the space and the arrangement of the exhaust hoods. The HTF series fire-resistant high-temperature smoke exhaust fans are products of the "Xinghuo" project, characterized by excellent performance, good high-temperature resistance, high efficiency, less space occupation than centrifugal fans, and easy installation. The HTF fire fan's high-temperature resistance is excellent: the fan test meets the requirements of the GBJ45-82 fire code standards, and the company has established an internal control system that exceeds these standards, allowing continuous operation for over 60 minutes at 300°C and for 20 hours at a time at 100°C without damage. They are widely used in high-end residential buildings, ovens, underground parking garages, tunnels, and other locations. The performance listed in the HTF fire fan's performance table is within the high-efficiency range, divided into five performance points based on air volume. The selection should be based on the performance table. The qualified HTF fire fans delivered meet the rated air volume with an error in total pressure not exceeding ±5%, and the performance selection table represents the performance under standard conditions, applicable to technical documents or order requirements.