Its structure normally have two types, one is PET/AL/CPE, the other is PET/NY/AL/CPE. It has three main resistant functions of static, electromagnetic interference and moisture. Normally applied to large machines, electronic components, vacuum packing, telecommunication…. The product has superior puncture resistance and anti-static inner and outer layers with a surface resistance of 108 - 1,011ohm. (All sizes are available in open flat, zip lock, and kinds of tridimensional Styles).