1. The secondary card also has an annual fee: like the main card, the secondary card also has an annual fee, which is generally about half of the annual fee of the main card. And, like the main card, the annual fee of most supplementary cards can be reduced by spending a certain number of times or a certain amount.

2. Sub-card and main card share the quota: Sub-card and main card share the quota, and the quota of sub-card shall not exceed the quota of main card.

3. The loss of the main card does not affect the use of the secondary card: the main card and the secondary card of a credit card can basically be regarded as two independent cards except for sharing the quota. After the main card is lost, it will not affect the use of the secondary card, and vice versa.

How to inquire about the inquiry limit of credit card supplementary card?

1. Telephone inquiry: You can call the hotline of ICBC Credit Card Center and follow the prompts to inquire about the limit information.

2. SMS inquiry: you can use the reserved mobile phone CXED# to short the bank password, and you can use the reserved mobile phone number to edit the SMS and send it to the bank to inquire about the limit information.

3. Online banking inquiry: You can also log in to ICBC credit card online banking to inquire about your limit information.

4. Inquiry of outlets: You can also inquire at outlets near ICBC.