According to the different requirements of senior civil exhaust fan price, with variable speed or multi-speed drive form the heart reaches one machine (ie, when used through ventilation and fire high-temperature exhaust) purposes; airfoil axial flow into (HTF (GYF) -I, II) and Francis HTF (GYF) -IG, also making rooftop silencer type. 2. High efficiency: This series of axial fan using advanced CAD software by the multi-objective optimization design of new products developed in the test shows that fan efficiency greater than 80%, some big machine number greater than 85%, and has a flat efficiency curve characteristics conducive to energy conservation; 3, easy installation, covering less centrifugal fan: The fan base in the form of an axial flow fan or mixed flow fan, direct pipe connection or wall mounting with the wind, the installation can be vertical or horizontal form. Considerably reduced footprint. 1.HTF-Ⅰ, HTF-Ⅱ represents pressure type fire temperature exhaust fan exhaust fan, leaf type axial flow type: HTF-Ⅰ (single speed) and HTF-Ⅱ (double speed) of two; HTF- Ⅲ, HTF-Ⅳ representation pressure fire temperature exhaust professionals; 2, HTF-X as a silencer fire temperature exhaust fan, the user can choose according to the actual needs of different kinds; 3, HTF-W series fire temperature rooftop row Smoke dedicated fans, users can choose according to actual needs retardant fiberglass hood or steel hood; 4, HTF-D low pressure type fire temperature exhaust fan; 5. Special note: GYF and HTF series fan is a similar product. As we all know, a large amount of smoke and heat fire, and consume large amounts of oxygen. On its hazards, particularly at night with smoke exhaust fan occasion wide, smoke contains many toxic elements, even though non-toxic, can also lead to hypoxia due to combustion asphyxiation death. Every fire accidents in the burned persons, most are also the first to be smoked fainted after being burned when the fire smoke spread fast, level up to 0.5-0.8m / s, vertical up to 6-8m / s. In the fire, the one fire, and then a smoke control. Is off the fire extinguishing, broken smoke source, smoke control system was to provide safe passage to escape, and to facilitate the initial fire; smoke control system is referred to as the smoke and smoke two parts. Today, while the height of high-rise buildings, but also the depth development of space, underground development of exhaust fan manufacturers, and in the basement of high-rise buildings, the smoke control system is very important. The design of the unit concerned, we should pay attention to prevention in the design, exhaust design. Wide exhaust fan exhaust fan occasion _ _ Chenyu conditioned by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen-yu air-conditioning Co. (www.wccykt.com) strong, credible, Shandong Texas fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chenyu into the brilliant air conditioning and you work for a better future!