To meet the need for cooling fans mines, invented the mine explosion out of style main fan patented technology, combined with mine ventilation network parameters of the transformer cooling fan, in 1988 developed a scope of small and medium series withdrawable BK54 mine surface Axial main mine fan and BDK series withdrawable main surface rotating axial fan. Ground fan installation site should be flat proof cooling fans and press sample diagram gauge, laying rail, the choice of (24 ~ 38) kg / m rail to the rail can be embedded in the concrete floor, can also be fixed in the sleeper on. 2.2 Electric cooling fan | blower (certified) | Wada Cooling 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.