1. Preventing the growth of microorganisms in the environment Vacuum packaging bag equipment is the most critical link of packaging machinery. The main function of vacuum packaging bags is to isolate oxygen, so that the packaged products will not deteriorate. Its working principle is very simple, because most food products are mainly caused by the growth of microorganisms, and the space where most microorganisms grow is an oxygen-rich environment. The oxygen in the food is extracted to achieve the purpose of safe food storage. 2. Prevent the self-oxidative deterioration of food. In addition to inhibiting the growth and reproduction of microorganisms, the vacuum packaging bag also prevents the self-oxidative deterioration of food. Most of the oily foods in life contain a large amount of fatty acids and other substances, which interact with the oxygen in the air. Oxidation, spoiling food. For most of the food product packaging in life, most of the outer packaging will choose vacuum packaging products, and vacuum packaging products such as glass cans, iron cans and other packaging will greatly increase the packaging cost. Therefore, vacuum packaging bags are the most economical and affordable choice among all vacuum packaging products. Vacuum packaging bags, tea packaging bags