If the credit card certificate of Bank of Communications needs to be updated when it expires, you can bring the updated original valid certificate to the bank counter to update the information.

Cardholders can also update information by fax. Cardholders are required to provide clear copies of the updated 18-digit second-generation ID card, and indicate the words "credit card number and certificate update" on the copy, and fill in the mobile phone number, fax it to 02 1-38429878, and Bank of Communications will modify it for users within 3 working days after receiving the clear fax.