A smoke exhaust fan is a mechanical device that quickly removes odors, high temperatures, and smoke gases produced during the food processing in a kitchen. It features excellent high-temperature resistance and high efficiency. The types of fans include centrifugal and axial fans, and the appropriate size is chosen based on the space and layout of the exhaust hood. The HTF series fire-resistant high-temperature smoke exhaust fans are products of the "Xinghuo" project, known for their superior performance, good high-temperature resistance, high efficiency, less space occupation than centrifugal fans, and easy installation. The HTF fire fan boasts excellent high-temperature resistance: the fan test meets the requirements of the GBJ45-82 fire code standard, with an internal control system that exceeds this standard, allowing continuous operation for over 60 minutes at 300°C and 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 by air volume, and the selection should be based on the performance table. Qualified fire fans upon delivery have an allowable pressure difference of ±5% from the rated air volume, and the performance selection table is based on standard conditions, regardless of technical documents or order requirements.