... to oxygen gas/moisture/oil 4)OEM service high quality co-extrusion lamination packaging film3 layer and 7 layer co-extrusion lamination ... also produce other more kind of flexible packaging film and bags following:PVC shrink label film printing series.co-extrusion ... LDPE,LLDPE,PVC,HDPE,CPP,BOPP ,BOPA,PVDC-FILM,PET,VMPET,VMCPP single-layer and multilayer lamination material high barrable high strength, ...