... Ventilator, Ventilation, Ventilating Fan, Ventilation, Mine Anti-explosive Axial Flow Fans Axial fan, Axial Flow Fan, Fan, Ventilator, Ventilation, Ventilating Fan ... property. This machine is mainly used as ventilation applications for coal, metal mine or tunneling works.It features high ... to save energy. It’s the ideal ventilation fan for local ventilation in coal mine.Feature:1.High efficiency, ...