Negative pressure fan is a cooling principle that utilizes air convection and negative pressure ventilation. It is a machine that naturally sucks in fresh air from the opposite direction of the installation site - the door or window - to quickly force the indoor hot gas out of the room. Any poor ventilation problem can be improved, and the cooling and ventilation effect can reach 90% -97%.
Rotatable Wall Fan Large rotatable energy-saving wall fan Factory
Reversible Wall Fan Super large wall type energy-saving fan Manufactory
Wall Fan of Energy-saving Plant Rotating wall fan in workshop Factory
Fan Manufacturing Process Industrial non rotating wall fan Supplier
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