... 4)good strength,waterproof 5)OEM Black inside and white outside film plastic packaging film Raw materical ... custom madeUsage:.use to packaging food and snacks and liquid milk workablecertificate :ISO9001 certificate,QS ... KOPP),PET,BOPA,VMPET,AL,VMCPPmono-layer and multilayer lamination material high quality package,especially ... protection 2012 hign quality black and white film for milk (alibabaChina)