Seal groups. The main soft packing seal and centrifugal seal and sealing with nitrogen gas, no wearing parts within the sealed structure is very simple, the effect is particularly reliable, Puyang fan, easy to replace. Nitrogen gas shaft seal to ensure zero leakage. One advantage of the device's technology, this product has a high aerodynamic efficiency offer, BMJ gas pressure fan, saving effect is remarkable, blade mounting angle adjustable, can reverse the anti-wind, low operating noise, the overall stability, ease of installation safe, reliable, easy maintenance, low resistance device Bureau, is the ideal mine ventilation. Second, the fan blade profile use of the CAS academician Wu Zhonghua latest three-dimensional flow theory, a hollow airfoil blades, using forged iron after quenching increases the strength of the blade, blade using Q235 or stainless steel quality materials, the blades used in all models repression, thus ensuring the blade profile, improve the efficiency of the fan, ensure that the aerodynamic performance of the fan. Puyang fan _ _ Zibo Fan Factory blast furnace blower Ltd provided by Zibo Blower. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) is an industry leader in Shandong Zibo, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Zibo Blower leadership with the staff warmly welcome all inquiries negotiations to create a better future Zibo Blower.