Vacuum: vacuum major role in the Company's production is oxygen, in order to help prevent food spoilage, the principle is relatively simple, mainly due to deterioration of food mold rot caused by microbial activity, while the majority of microorganisms (such as mold and yeast ) need oxygen to survive, but the principle is the use of vacuum packaging, the packaging bag and food cells deprived of oxygen, so that the micro-material objects lose the "survival of the environment." Experimental results show: When the oxygen concentration packaging bags ≤1%, rate of growth and reproduction of microorganisms on a sharp decline in oxygen concentration ≤0.5%, most microorganisms will be inhibited and stop breeding. (Note: The vacuum packaging can not inhibit the propagation of food spoilage and discoloration caused by anaerobic bacteria and enzyme reactions, and therefore needs to be combined with other auxiliary methods, such as refrigerated, frozen, dehydrated, high-temperature sterilization, irradiation sterilization, microwave sterilization, salt marinated, etc.) in addition to vacuum oxygen inhibit microbial growth and reproduction, another important function is to prevent food oxidation, because fats and oils in foods rich in unsaturated fatty acids, the role of oxygen by oxidation, the food taste, bad, In addition, the oxidation of vitamin A and C also makes losses, the role of oxygen in food coloring by unstable substances, the color darker. Therefore, the oxygen can effectively prevent food spoilage, keep its color, smell, taste and nutritional value. Netted vacuum not only have more than one function and role, and greater benefit is vacuum wall with wavy, some special products will be close to the bag wall. The wavy facilitate rapid air bag smoked, more thoroughly exhausted all the air bag. Nylon vacuum bags are generally complex, that one, two or more of the basement membrane (sealing PE film, CPP, BOPP) and nylon (airtight better) or PET film special glue bonding by Ji (chemical products ) through complex machine composite film. Then by cutting bag machine made, after vacuum sealing performance is optimal. Air barrier performance, oxidation, waterproof, moisture and strong mechanical properties, high blasting performance, strong anti-puncture tear resistance, non-toxic, tasteless, in line with national standards. Good sealing performance, good transparency.