Application field: T35-11 axial flow fan is an energy saving new product, with the characteristics of simple structure, high efficiency, littlie vibration and low noise. It applies to the ventilation in ordinary work place, warehouse, house and building, or for strengthening the cooling use of central heating, or used as free fan if the shell is removed; or installed in series interval in the long vent-pipe to enhance the full pressure in the pipe. The medium conveyed is dry air and other matters which are non-corrosive, non-self-igniting and non glutinous. The temperature of the medium conveyed should not be higher than 60℃. The powder dust contained in the conveying gas should be no more than 150mg/m3.