After applying for a credit card online, a string of red numbers will be displayed after submitting the application. This is the code for your application. If the subsequent online application is pre-approved, CCB will send a text message for the interview, and the code will be informed in the text message. If you ask about the registered mail code for mailing the card, CCB will mail the card about 3-5 days after the credit card is approved. When sending the card, a text message will be sent to you. The SMS will tell you the registered mail code. Yes. Call the postal customer service hotline 11185 to check the delivery status. If you do not retain these two codes, you can call the CCB Credit Card 400 customer service hotline to check.