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Introduction of FBD explosionproof Coal Mine Axial Blower Fan/ventilat FBD explosionproof Coal Mine Axial Blower Fan/ventilation fan amp;middot; Application: Best choise ventilation fan for under mining coal, deep tunnel/ metal mining/ engineering tunnel amp;middot; Function: far distance ventilation, big power ventilation, low noisy, high efficiency, energysaving, various style available amp;middot; Temperatuer