Yantai vacuum bag, vacuum bag Tai'an, Linyi vacuum bag 
 Liaocheng waterproof vacuum bag, Changzhou, anti-static vacuum bag, vacuum pumping Binzhou, Beijing nylon vacuum bag, vacuum bag vacuum in the extract, and then filling with nitrogen, carbon dioxide and other gases. Nitrogen is an inert gas, from the filling, the vacuum bag to maintain positive pressure to prevent outside air into the bag bags, food plays a protective role. Carbon dioxide to inhibit mold, bacteria and other microorganisms @ active role. Some, such as crisp delicate food, easy to deform and take the oil of food, there are sharp edges or high hardness and other food will be punctured vacuum bag, vacuum packed inflatable after the gas pressure inside the vacuum bag outside the atmospheric pressure is greater than can effectively prevent the fragmentation of food under pressure, deformation, and does not affect the appearance and printing decorating bags.