... corner, sealed in the back center, etc.4. Printing: Good quality, high speed printing machines.5. Price: According to different material , size ... use;3.Strong sealing strength, non-breakage, non leakage;4.Heat sealing the sides edge, colorful and vivid printing;5.Non ... hanger hole, etc.5) Style available: stand up, zipped, heat-sealed, heat-cut, cold-cut, sealed-in the-middle, three-side-sealed ...