1.Aluminum foil materials ; 2.Stand up shape,; 3.Zipper open ,gloosy finished 4.Silvery color ,for food ... ziplock open ,various size and thickness; 3.Aluminum foil plastic materials ; 4.Moistureproof and barrier; 5. ... food and goods packaging,and so on Printing color and sizenon or can be printed 0-10 ... on the bag's size ,materias,thickness,printing color,bag's shape,quantity Note ♦ The Cylinders need ...