1.Heavy-duty characteristics: AC fans are designed and manufactured for the highest theoretical efficiency, excellent heavy-duty characteristics, and can adapt to harsh environments.  

 2. Bead bearing support: the central driving pulley of ac fan is supported by only one bead bearing, and the louvers are windproof, dustproof and rainproof.  

 3. Super suction: THE AC fan uses negative pressure to draw air, with super suction, to exchange indoor and outdoor air, and discharge the hot air, peculiar smell and dirty air in the factory. After the air in the factory is discharged, it naturally flows into fresh air due to the negative pressure, so that the indoor temperature is reduced to the same as the outdoor temperature.