Ventilation Equipment Co., Ltd. Shandong Aetna is a specialized production of zero leakage of gas blower fan manufacturers. Gas turbocharger centrifugal blower Ventilation Equipment Co., Shandong Aetna according to the development trend of the two-stage gas furnace, combined with a single-stage gas furnace raw exhaust gas and the development of the new drop-off, it solves the long-standing dependence on imports or fundamentally Roots blower noise can not be adjusted high flow conditions. Run from the market since the proof: low aircraft noise. Smooth performance curve, flow regulator large area. High efficiency. Low energy consumption, especially good sealing fans, the majority of users. The machine can be made clockwise or counterclockwise rotation, exit angle of 0 degrees. 90 degrees. 180 degrees in three directions, the user can choose according to the actual needs of the distribution pipe.