Nuts are one of the most common snack foods. When it comes to the storage of nuts, shelf life, and freshness are issues of concern to both suppliers and consumers. Most nuts can be stored for several weeks at room temperature without changing their taste after opening, and raw nuts can be stored for

The topic of fresh meat has continued in recent years. The output of meat products is high in every country. The proportion of deep-processed meat products in developed countries in the world generally reaches about 50%, and some countries even reach more than 70%. Packaging materials are an importa