Food is the energy source for people's survival, which is very important for people. In the modern society with advanced science and technology, people have mastered a variety of ways to store food. The most common way to store food is to use refrigerators, freezers and other electrical appliances for refrigeration. However, the temperature in the freezer is usually around - 10 degrees below zero, which can not kill harmful bacteria, but only inhibit the rate of food decay. In hot summer, vegetables and fruits that have not been eaten will rot even if put into the refrigerator. Based on the difficulty of food storage and preservation, CaSO CaSO Electric Co., Ltd. innovated and developed a vacuum sealing machine, which aims to solve the problem of food decay, moisture, bacteria, smell, etc

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