If you want to inquire about China Merchants Bank's one-card account opening bank, please go to our homepage, click on the popular version of personal banking on the right, enter the card number and inquiry password to log in, and click on the horizontal menu Account Management-More Inquiries-One-card account opening information to see the complete account opening bank name in the account opening institution. (If you handle the professional version at the counter of our bank, you can also log in to the professional version and select the horizontal menu "Account Management"-"One Card Account Opening Information Inquiry". ) If you are inquiring about the bank of another card, please call customer service and select 2 to enter the manual service inquiry.