... XPE Aluminum Foil Insulation, Duct Insulation, XPE heat insulation 1- XPE Aluminum Foil Insulation 2 - heat preservation XPE XPE Aluminum Foil Insulation, Duct Insulation, XPE heat insulation XPE Aluminum Foil Insulation with high ... quality material are used in ventilation ducting to provides excellent functions of thermal reflection, heat insulation ...