TF-121B top margin widespread use of energy-saving certification glass blower range for sewage odor, gas purification, acid corrosive gas pumping exhaust. TF-121B top margin energy certification FRP fan casing, inlet bell, impellers are pure glass, steel, completely changed the production process of traditional glass-lined carbon steel. Enclosures and hob connecting bolts coated with the overall molding processing mode, solve the bolt damage due to corrosion caused by the phenomenon. Fans with double base, without dismantling bolt, easy to maintain fan. Fans seal at doing special seal treatment to prevent leakage of toxic and harmful gases. AMCA certified by the U.S. China's first fan brand, has been China's energy-saving product certification. Based on "fan affinity laws" turn ratio and horsepower ratio was three party relationship, therefore the higher the efficiency of the province. The same fan efficiency operating point higher speed will be lower, as you improve the life of the unit and reduce the cost burden. Top margin fan, buy the rest assured