Bank of Communications supplementary cards refer to associated cards issued using Bank of Communications credit or debit cards. There are generally two types of supplementary cards, one is the associated card set by the main cardholder, and the other is the associated card held by other authorized persons. The supplementary card and the main card share the same account and limit, but different consumption limits can be set separately to facilitate independent consumption by family members or children.

Convenient to accept authorization: The main card holder can open supplementary cards for family members or relatives and friends to facilitate their independent consumption.

Double limit protection: The main card and associated card share a credit limit, which allows family members to enjoy life with more peace of mind.

Independent limit management: The main card holder can set different consumption limits on different associated cards according to the purpose and credit status of each additional card.

To open a Bank of Communications supplementary card, the main card holder needs to apply for activation at the bank or online banking and fill in the relevant information of the associated card. After activation, supplementary card holders can independently activate and use it through mobile banking or online banking. In addition, it should also be noted that the main card holder needs to supervise the consumption and bills of the associated card to ensure the security of the account information.