1,Excellent vapor barrier 2,water-proof;moisture-proof 3,15-30 degree of temperature cooling for outer of building. ... resistant, 2.water-proof ,sun-resistant,anti-aging, tear proof.3.antifreeze, corrosion-resistant, 4.Waterproof, mildrewproof, tear Resistant, acid Resistant ... layers of materials.The surface is metalized pet film,middle layer is polymer woven.With PE as adhesive, silver film can ...