HTF fire series of high-temperature exhaust is the more optimal design of research and development of new products. It has high efficiency and smooth curves of the characteristics and is conducive to energy conservation. The fan motor using direct transmission, according to the different requirements of senior civil construction, single-speed or multi-speed drive form, so as to achieve exhaust ventilation and the use of fire when the high temperature exhaust the purpose of either a horizontal or vertical direction can be installed Characteristics. The products are widely applied to senior civil construction, oven, underground garage, tunnels and other occasions, both can be used as ventilation, can also be used as air supply.