The amount of the secondary card is shared with the main card. If the credit limit of the primary card increases, the credit limit of the secondary card will also increase. The credit limit of the secondary card cannot exceed the credit limit of the primary card.

The credit card holder of the primary card can limit the amount of the secondary card. If the amount of the main card is 50,000, then the amount of the secondary card can be set to 5000, which can not only satisfy the use of the secondary card holders, but also limit the amount and prevent abuse.

How to set the credit limit of supplementary cards: the main cardholder logs on to the credit card website and sets the credit limit of any supplementary card in the "Card Management" function option of the website. The setting of credit limit takes effect immediately.