Product tracing is a way to keep track of the products you buy. It helps you make sure that you are getting the right product and that it is good quality. When you buy something, the seller will give you a unique code (also called a serial number or barcode) for that item. This code helps them track where the product came from and when it was made. This helps them know if the product is safe and of good quality. If there is ever a problem with a product, it's easier to find out what went wrong and who made it, thanks to product tracing.