Call the credit card center to inquire. After the credit card is sent, the credit card center will inform you of the registered letter number by SMS. \xd\1. General credit cards are sent by registered mail from the credit card center; \xd\2. After mailing, the registered letter number will be notified by SMS; \xd\3. With the number, you can check the delivery of registered letters on the postal website; \xd\4. Check whether the credit card is in good condition after receiving it, and then sign for it; \xd\5. The card needs to be activated before it can be used normally.