Advantages to be retarded fire exhaust fan ventilation: cooling effect is good; low energy consumption exhaust fan installed in promoting energy is particularly important today; ventilation and easy to grasp the opportunity, less prone to condensation; without a separate fan with a convenient and flexible . Due to the development of the machinery industry, to promote the country's economy also is in constant and rapid development, such as some machinery and equipment exhaust fan applications early years, only the introduction of exhaust fans from abroad to buy, and now China has a strong technical and economic strength. Technology and manufacturing level exhaust fan fire products have a very large increase, continuous research and development of new products RPZ axial fan exhaust fan fire characteristics: 1, RPZ fire exhaust fan housing is made of high-quality carbon steel plate into all the parts have been completed after processing the surface coating treatment. 2, RPZ fire exhaust fan impeller hub and blades are made of cast aluminum, the advantages of high efficiency, low noise. 3, RPZ fire exhaust fan when you can still adjust the angle of the blades by adjusting the operating point of the fan impeller, fan performance can also be adjusted by varying the number of blades range. Changing the number of impeller blades 9 leaves, can be changed 6 leaves. 4, RPZ fire exhaust fan blade angle adjustable, can be between 8 ° to 36 ° adjustment. A model angle adjustable 8, 4 ° of an angle. Exhaust fan installed, up Swiss mechanical and electrical (online consultation), exhaust fan, ventilation and air conditioning provided by the liter Swiss mechanical and electrical equipment factory. L Rui HVAC Electrical Equipment Factory (www.dzsrxfkt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In liters Swiss electromechanical leadership with the staff warmly welcome all inquiries negotiations to create liter Swiss electromechanical better future.