The supplementary card of China Merchants Bank Credit Card is handled by the main card for immediate family members (parents, spouses or children). The supplementary card can enjoy the credit limit of the main card, and the accounts will be listed in your statement, and you will pay the accounts together. Applicants can apply for both the main card and the supplementary card at the same time, and apply for the supplementary card separately, and the main cardholder must have the card.