In order to extend the shelf life of food, new packaging technologies that are continuously developed are adopted, such as  such as white cardboard packaging, mildew-proof packaging, moisture-proof packaging, anti-fog packaging, anti-static packaging, selective breathable packaging, non-slip packaging, cushioning packaging, etc., which are widely used in developed countries New technologies are not widely used in our country, and some methods are still blank. The application of these advanced te...