Each credit card master card can apply for up to two supplementary cards (at the discretion of the bank), and the master card holder has the right to request cancellation of its supplementary cards. The credit limit of the secondary card shall be designated by the cardholder of the primary card independently, and shall not exceed the credit limit of the corresponding primary card; If the cardholder of the main card is not specified, the credit limit of the auxiliary card is the same as that of the main card.

Extended data:

The difference between the main credit card and the subsidiary credit card.

1. Both the primary card and the secondary card will generate an annual fee, but the annual fee of the secondary card will be cheaper than that of the primary card. However, at present, many banks' credit cards can be spent by credit card, and the annual fee can be exempted if a certain number of requirements are met.

2. The main card and the auxiliary card share the credit line of the main card. For example, if the amount of the main card is 10000 yuan, then the consumption of the secondary card is also deducted from this 10000 yuan. Generally, it is not allowed for the amount of the secondary card to exceed the amount of the primary card.

3. Many applicants for supplementary cards are immediate family members (parents, spouses or children). For example, college students can't apply for credit cards, but they can apply for supplementary cards with their parents. Supplementary cards have the same ability to spend first and then repay.

References:

Baidu encyclopedia-supplementary card