... 3 layerspackaging:Size: customized size availableThickness: customized thickness availableFunctions: barrier / moisture proof / sun-resistant / water proof / antistatic1 ... or LDPEMoisture proof,good heat seal,good air barrier and transparencyDry food,expanded food,biscuit, cookies ... and bread packagingBOPP/VMPET or VMCPPGood light barrier,anti-puncture,good stiffnessDry food, expanded food, ...