... European designing structure long lifespan Characteristics of WUSUN Poultry ventilator:Exhaust Fan -Huge air volume, Low noise ... almost all places which need ventilation and cooling.1.industry: garment manufacturing factory, electronics, plastic, shoe, toy ... guesthouse.3.Public: hospital, station, gym, school4.Animal husbandry: poultry house, pig, chicken, rabbit, cow barn5.Agriculture: horticulture, ...