... life 4.large air capacity Characteristics of WUSUN Greenhouse Equipment: Exhaust Fan -Huge air volume, Low noise, ... water effectively. - Every fan is individually checked for quality.the principle of ventilation and cooling of WUSUN ... , gym, school4.Animal husbandry: poultry house, pig, chicken, rabbit, cow barn5.Agriculture: horticulture, greenhouse. greenhouse cooling equipment for vegetable farm