The president can handle 654.38 million credit cards with his signature. He went to the bank to ask the branch president to submit a credit card application form, and the female branch president signed the application form as a guarantee. Two weeks later, he can receive a credit card express, and the credit card limit is 654.38+ 10,000 yuan. Credit cards, commonly known as overdraft card, are popular among young people by spending first and then paying back.