1. For inquiry: In fact, one of the main functions of this serial number is to facilitate buyers to inquire about the authenticity and source of the package. Buyers can know whether the bag is genuine by querying these serial numbers. Generally, fake products do not have serial numbers, or the serial numbers cannot be queried.

2. Make anti-counterfeiting marks: Serial numbers like this are usually installed on the inner seam of the edge of the bag. It will not be clear and noticed by the user, but if it is checked, it can be clearly seen. See. The main function of this serial number is to tell the place of manufacture and the date of manufacture.

Extended information:

Precautions for bag maintenance:

1. When cleaning the bag, users can use detergent to directly scrub the oil stains. , red and other dark colored fabrics can be lightly brushed with washing powder.

2. For pure white fabric bags, you can use dilute bleach (1:10 dilution) to directly brush the oil stains with a toothbrush to remove them.

3. Soak the bag in detergent solution for 10 minutes (add 6 drops of detergent to each basin of water and stir evenly), and then perform normal treatment.

4. Before cleaning, users should dilute it with oxalic acid and then use a toothbrush to wipe the contaminated area, and then perform regular treatment.

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