Its structure normally have two types, one is PET/AL/CPE, the other is PET/NY/AL/CPE. It has three main resistant function of static, electromagnetic interference 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, ziplock, and kinds of tridimensional Styles)