1, "Food Safety Law" requires that there must be a production license number, but the QS mark is not mandatory, which is the requirement of the quality supervision department. However, in the early days (especially before the implementation of the Food Safety Law), the food production license was managed and issued by the quality supervision department, so all enterprises that obtained the production license would be marked with QS mark. Therefore, if there is a QS number on the food package, but there is no QS mark, it does not violate the Food Safety Law.

2. Theoretically, the production license number mentioned in the Food Safety Law includes but is not limited to food production license or small workshop production license. Therefore, if it is a legal small workshop food, even if there is no QS mark, it is a legal product. The management and requirements of small workshops vary from province to province, so we can't generalize. )

3. After the implementation of the new Food Safety Law, the food production license was issued by the Food and Drug Administration, and the license number was changed from QS to SC. Therefore, the QS logo will gradually withdraw from the market.

To sum up, whether a food is regular or not mainly depends on whether there is a production license number. Although the QS mark exists in most foods at this stage, it can no longer be used as a basis for judgment. Many products can only enter the market if the production license number is indicated on the label. If you are in doubt about the authenticity of the production license number, you can check it on the website of China Food and Drug Administration.