... layer :OPP/AL/PE/CPPUsageas you neededTypeback-side sealed bag,two-side sealed bag,three-side sealed,stand-uppouch,zipper bag,stand-up ... with zipper bags,side gusset bag,Print & colorGravure printing, ... heat-cut, cold-cut, blown, sealed-in the-middle, three-side-sealed, with handle or hanger holeThe following is the technical ...