In order to fit the requirements of the resistance of mine ventilation network, and ensure fan efficiency, the machine uses a rotating structure FBD proof fans, that two of the same type together fans docking proof axial fans, two opposite impeller rotation direction, eliminating the need the vanes and reduce losses FBCD vanes rotating Fan, improve efficiency. Fans at the factory commissioning, inspection. Be careful not to cut through the casing sharp finish, not hammering the fan casing and prevent the pit. Inadequate maintenance and fault wind tunnel resistance is too large to expand the roadway area to transfer large fan blade mounting angle can not be stressed too big to replace the maximum angle of rotation FBCD blower | blower (certified) | Fan Co. 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.