... 2)3or7 layer extrusion lamination. 3)barrier to oxygen gas/moisture/oil 4)OEM service high quality co-extrusion lamination packaging film3 ... layer and 7 layer co-extrusion lamination film for package.thickness ... film series production.Material such as LDPE,LLDPE,PVC,HDPE,CPP,BOPP ,BOPA,PVDC-FILM,PET,VMPET,VMCPP single ...