(China Merchants Bank) If you need to check the card number of a card, you can bring your ID card to any branch of China Merchants Bank to print the account certificate, which will display the card number; If there is a popular version (registered associated card) or a professional version of all Netcom users, you can query the associated card number after logging in; In order to prevent others from impersonating you to inquire about your information through telephone or online channels, you are only allowed to inquire about the card number of a card at the counter; If you need to check the credit card number, please log in to the Professional Edition (you need to apply for the Professional Edition and have associated a credit card) and check the card number in "Professional Edition Management-Certificate Associated Credit Card".