... PVC material 2,competitive price,fine quality 3,Oil, Acid, Alkai & high temperature Resistantflexible duct:/air duct/exhaust ... white,black,green ect.5.Character: enduring high temparature,acid,alkali,oleic acid, harmful liquid state gas ect.Temperature range:from ... white,black,green ect.5,Character: enduring high temparature,acid,alkali,oleic acid, harmful liquid state gas ect.Temperature range:from ...