... smoothness. Low bag-broken 5.7-layer co-extrusion 2012 high quality 7 layers co-extrusion EVOH packaging film (alibaba China) ... 5) puncture resistance,transparency7)keep food longer time fresh8)high seal strength, good heat-sealing performance, excellent smoothness and ... ,VMPET,VMCPP single-layer and multilayer lamination material high barrable high strength,especially excellent use for food package to ...