... guanrantee European designing structure long lifespan Characteristics of WUSUN Poultry ventilator:Exhaust Fan -Huge air volume, Low noise, ... and alkali. Application:Our exhaust fan can be used in almost all places which need ventilation and cooling ... guesthouse.3.Public: hospital, station, gym, school4.Animal husbandry: poultry house, pig, chicken, rabbit, cow barn5.Agriculture: horticulture, greenhouse ...