industrial fanis appliable for the sun-stroke prevention,cooling purposes in the occasions such as factory workshop,warehouse,basement,cantee,etc.the service enviromental temperature of the fan does not exceed 40 degree.it can be used in the non-corrosive gas with no particle dust. strong force electric fan is mainly composed of motor,swing mechanism,fly,screen cover,wall type support frame.the fly has been formed by aluminum. die-casting with static balancing correction,smooth running and high efficiency .