Sweet and sour pork is a food, so the information that must be written on its packaging bag is as follows:

1. The name of the food with Chinese markings should be displayed in a prominent position on the packaging bag , a name that clearly and truly reflects the attributes of the food.

2. Valid information such as the operator's information, food production and operator's address, name, etc. must be marked on the packaging bag.

3. Ingredients list. The ingredient list of food should be reflected on the packaging bag, and the names of each ingredient and the names of various additives must be marked and displayed as required. In particular, ingredients that are prone to allergens need to be highlighted. Label.

4. Product specification net content, this needs to be displayed on the same page as the food name, and its fat content, calories, sugar and other information should be clearly marked.

5. Production date and storage conditions. The production date, expiration date and storage conditions of the product must also be marked on the packaging bag, including the environment and precautions for placement.

6. Product execution standard number. Food has a product execution code and sequence number, which need to be clearly marked.

7. Production license number. The production license number of the product must be marked on the food packaging. The latest operator to obtain the license will no longer use the QS mark.

As a food packaging bag, these labels must be written on it for the sake of food safety.