Fans can be divided by the use of classified material are several, such as steel fan (ordinary fan), FRP fan, plastic fan, aluminum fan, stainless steel fan blower, etc. can classify the direction of gas flow is divided into centrifugal, axial , oblique flow (Francis) and cross-flow and other types. (1) centrifugal fan. After entering the axial flow impeller fan mainly along the radial flow. Such fan axial fans how much money is made in accordance with the principle of centrifugal force, the products include centrifugal fans, centrifugal blowers and centrifugal compressors. Octagonal fiberglass roof fan using characteristic octagonal fiberglass roof fan of using aluminum roof fan is characterized by advanced roof ventilation equipment. Ventilation is mainly applied to hotels, restaurants, theaters, office buildings, laboratories, factories, residential and other buildings. Fans of the series with a beautiful shape, knot maple compact, high strength, light weight, price axial fan, corrosion resistance, anti-aging, low power consumption, low noise, reliable operation, easy installation and maintenance features axial fan uses, using a venturi entrance tube test, compared with similar products, efficiency increased by 30%. According to user needs my company can produce proof roof fan, the performance with the same number of identical axial fan manufacturers, Hao Yang air conditioning equipment (certified), axial fan from the Texas Air Conditioning Equipment Co., Ltd. Hao Yang provided. Air Conditioning Equipment Co., Texas Hao Yang (www.dzhykt.com) is Dezhou, chemical fiber fabric, lining leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hao Yang air conditioning equipment in leadership with the staff warmly welcome all inquiries negotiations to create Hao Yang air conditioning equipment a better future.