No Pressure Ventilation Door

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No Pressure Ventilation Door (Balanced pressure ventilation door) is mainly used for underground into back into the lane and the main return air lane between each contact, which is the substitute for all air door. The damper is an ideal air door of our country coal mine at present, and is mainly used for underground into return air lane and the main return air lane between each contact which, it breaks the old traditional damper structure for a long time. It is mainly used in underground into the return airway and into the return airway main liaison between each lane, it is breaking the long tradition of old-fashioned structure type throttle.

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Shandong China Coal Group

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