... 2) Customized size, shape, material, thickness, etc. 3) Extra high protection barrier 4) Zip lock available - increase re-usability 5 ... ) Leak-proof and moisture-proof,high temperature&pressure resistance,easy to open 6) Suitable for automatic ... against air, moisture&puncture 8) 13 colors with our high-resolution rotogravure printing machines http://www.printstandupbag.com