The signature column on the back of CCB's credit card is a function set by the bank for the safety of customers. If the signatures don't match, the mall may not sell related goods. With the signature, you can get back the card that was eaten by the machine. The relevant information about the signature is as follows:

1. If the credit card is not endorsed, it will affect consumption abroad

2. Avoid too neat signature

3. With the signature, the card eaten by the ATM machine can be retrieved

4. If the signatures are not matched, the shopping mall can refuse to sell related goods.