Hello, credit card supplementary card: 1. The main credit card cardholder can apply for supplementary cards for immediate family members (parents, spouse or children). Domestic applicants must be over 14 years old, and overseas applicants must be over 14 years old. 18 years old. You can hold your own primary card and someone else's supplementary card at the same time. 2. The card type of the supplementary card must be the same as that of the main card, and it must share the credit limit with the main card. It does not have an independent account, cannot log in to online banking alone, does not issue independent bills, and repayments are included in the main card account; 3. Supplementary card The rights and obligations of the main card are basically the same. The supplementary card can enjoy the same preferential annual fee policy as the main card. For example, if the main card is swiped 6 times, the main card's annual fee will be reduced or exempted for the next year. Then the supplementary card will also be swiped 6 times and the supplementary card will be exempted. Annual fee for the following year. 4. After the supplementary card is issued, it will be sent to the address of the primary cardholder. Please ensure that the address of the primary cardholder is valid before the card is issued.