Credit card holders can apply for supplementary cards for immediate family members (parents, spouses or children), such as students who lack financial means. The secondary card and the primary card share the credit limit of a credit card, and the account will appear on the same statement. In addition, the rights and obligations of the main card and the auxiliary card are basically the same.

Supplementary cardholders can't log in to credit card online banking, but the main cardholder can enable online payment for supplementary cards.

The main card and the auxiliary card need to be the same card type. If supplementary cardholders like other card types, they can contact the customer service hotline, switch to manual service and try to apply for special treatment.