... proof flexible ductanti-static ventilation duct, air duct, anti-static flexible ductflexible duct:/air duct/exhaust duct,ventilating duct,flex duct, ventilation duct1,Material: PVC flam ... oleic acid, harmful liquid state gas ect. the duct body is without any lapping defect,with the ... wind resistance,strong anti-pressure from 3000pa-5000pa.Temperature range:from -15°Cupto +80°C.Application :Widely used ...