1. Make another label on the basis of the original label, and don't cover it. The contents are: the name and address of the subcontractor, and the word "subcontractor" should be indicated (other information, such as contact information and subcontracting date, is not mandatory).

2. Make a big label again, with the original label content+subcontractor's name and address+subcontractor. There is a problem here, that is, the shelf life of the product. 1 If the repackaged sales unit contains multiple minimum sales units, the production date is the latest and the shelf life is the earliest. That's all. Of course, if after repackaging, the outer package is transparent, and you can clearly see the label content on the small package inside, then the outer package does not need to be marked repeatedly.