1. The main cardholder of a credit card can apply for a supplementary card for his immediate family members (parents, spouses or children), and the supplementary card applicant must be at least 14 years old. You can hold your own primary card and someone else's secondary card at the same time. 2. The secondary card must be the same type as the main card and share the credit line with the main card. There is no independent account, no independent bill, so you can't log in to online banking alone, and the repayment is included in the main card account; 3. The rights and obligations of the supplementary card are basically the same as those of the main card, and the supplementary card can enjoy the same preferential annual fee policy as the main card. For example, if the main card is swiped six times, the annual fee of the main card can be reduced in the following year. 4. After the secondary card is issued, it will be sent according to the address of the main cardholder. Please ensure that the address of the main cardholder is correct and valid before issuing the card.