The Agricultural Bank of China will charge a certain fee for the second card, usually an annual fee and a small monthly management fee. Only one of the two ABC cards can be used for online banking, which is a debit card. The debit card that each user handles for the first time belongs to 1 account, and there is no restriction on consumption and transfer payment. The second debit card belongs to the II account, so it is not advisable to deposit it, and it can only be transferred to the I account. This is a credit card. Customers can have at most two ABC credit cards, one as the main card and the other as the auxiliary card. There is no difference in function.