... industrys ventilationcooling system and heating system.Application for: animal husbandry, poultry house, livestock breeding, flowers and plants, greenhouse, factory workshop, textile ... )-1220110046014003800073≤7075038012201220400DJF(a)-1530140032514005580060≤70150038015301530400Products photos : Sanhe DJF series Centrifugal poultry exhaust Fan 50" CE and CCC certificate ISO 9001 Certificate