Products with a shelf life within 20 days. Cheese sticks within 20 days from the shelf life are temporary goods, which refer to products near the shelf life. Generally speaking, the price of temporary goods will be cheaper. On May 3rd, 20 1 1, the Ministry of Health issued GB-7718-201to define the shelf life of prepackaged foods as follows, that is, the period for prepackaged foods to maintain its quality under the storage conditions indicated on the label. During this period, the product is completely suitable for sale and maintains the unique quality that does not need to be explained or has been explained in the label.