... . About 200-350 times of common glass.2) Light weight: About 1/2 times of glass of the same thickness.3) Light ... heat insulation wall for expressways and houses 5) Instead of glass,decoration door,curtain wall6) Soundproof material for partitions 7) Unbreakable ... of motorcycles ,airplanes ,trains ,liners, vehicles, motorboats ,submarines and police glass shield machine window