The inkjet code on the vacuum packaging bag is generally sprayed on by an inkjet printer. Generally, the vacuum packaging bag is printed with a two-dimensional code, the date of production, and the manufacturer andlogoAnd other information, when choosing materials for vacuum bags, you must choose according to the packaged products, and you must choose regular packaging material products that meet national standards, otherwise it will cause serious consequences, leading to problems such as spoilage and deterioration of the packaged products.Foods packaged in vacuum bags sometimes add some preservatives or other chemicals that change the taste of the food in order to increase the shelf life, because when the seal is vacuumed, it needs to be heated, and the heat may cause these chemicals to react, resulting in damage to the package. Food spoilage.In order to reduce the packaging cost, many unscrupulous merchants in the market now choose inferior quality, relatively thin, soft and light vacuum bags, which are damaged due to too much strength during the vacuuming stage, or squeezed during transportation. It will cause damage and endanger the rights and interests of consumers. Here we also call on industry practitioners to strictly abide by my country’s relevant production process standards for material selection and production.