PVC heat shrink bags,Polyvinyl chloride polymer bags,packaging material,plastics industrial.stretch wrap packaging.shrink foil PVC heat shrink bags,Polyvinyl chloride polymer bags,packaging material,plastics industrial,stretch wrap packaging,shrink foilThe character of POF heat shrinkage films:1.Innoxious property,can pack the foods directly.2.High transparency,good sheen,high shrinkage,can make ...