The secondary card of China Merchants Bank's credit card is handled by the primary card for immediate family members (parents, spouses or children). The secondary card can share the credit line of the primary card (the primary card can set the credit line of the secondary card), and the account will be listed on the statement of the primary cardholder, who will pay the account together. Applicants can apply for both the main card and the supplementary card, and the supplementary card can be applied separately. The main cardholder must have a card (except for international students' credit cards).