Quality wide 4-72-16B centrifugal fans, centrifugal fans high combustion efficiency, less pollution of the environment and other characteristics of the circulating fluidized bed boiler rapidly developed and applied. To change the oil regularly 4-72-12C centrifugal fans, for the first time after 200 hours of operation, to be replaced once every six months later, when the oil change inspection seal is intact. 4-72-5 # centrifugal fans, boiler fans, centrifugal fans by Zibo Blower Factory Co., Ltd. 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.