... making food plastic bag series ,QC ISO9000,certification,protected and non-toxin ,OEM is welcomed ! food bag: 1)gravure printing ... -barrier,low MVTR 4)food grade,QS approvedfood bag:1)material:Poly side:PET/PET/PE,foil ... pull down it,then the bag is opened.OR just open the bag with the tearing part.CertificateQc,ISO9000Advantagewe ... Reference Pics:Producing progressing : redmoon pet food packaging bag