Characteristic: A machine dual purpose (ventilates and discharges fume), has the amount of wind to be big, the rotational speed is low, the movement is steady, the noise is low, the structure is compact, easy installation.

 use: The guesthouse, the hotel, the assembly hall, the theater, the basement, Factory and mining enterprise's workshop, the office building and need to ventilate the air change the situation use.

 specification: Wind engine case specification: 9#~30# amount of wind: 2600~60000 m3/h wind pressure: 200~700Pa