Honglian Exhaust fan is the use of air convection, negative pressure ventilation cooling principle, is a natural inhalation of fresh air from the installation site - the door or window, the indoor hot air quickly forced out of the outdoor, any poor ventilation can be improved. Exhaust fan are widely used in Agriculture and industry ventilation and cooling. It is mainly used for animal husbandry, poultry house, livestock breeding, greenhouse, factory workshop, textile etc.
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