Main products: aluminum foil bag, vacuum bag, shielding bags, aluminum bags, board vacuum bags, cooking food vacuum bag, nylon vacuum bag, anti-static metal bags and other packaging materials. Zhoushan vacuum bag, anti-static vacuum Zhoushan, Zhoushan vacuum, vacuum-packed in one important aspect is oxygen, and prevent food spoilage, the principle is relatively simple, due to deterioration of food mold rot caused mainly by microbial activity, Most micro-organisms (such as mold and yeast) is need oxygen to survive, and this principle is the use of vacuum packaging, the packaging bag and food intracellular deprived of oxygen, microorganisms loss of "survival of the environment." Experimental results show: when the oxygen concentration in the packaging bag of ≤1%, rate of microbial growth and reproduction of a sharp drop in oxygen concentration ≤0.5%, most microorganisms will be inhibited and stop breeding. (Note: vacuum packaging can not inhibit food spoilage and discoloration enzyme reaction of anaerobic bacteria to multiply and cause, it needs to be combined with other complementary 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, make food taste, deterioration Further an oxidation of vitamin A and vitamin C loss, 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.