Agricultural Bank of China now controls the risk of bad debts, and it is difficult to approve credit cards and apply for them, so the amount of approval should not be high.

Bank of China is neither good nor bad. It's no big deal.

CCB is slightly better, the points are permanently valid, and the credit card quota is upgraded quickly.

The reason why ICBC is recommended is because it is the same as CCB in terms of quota, but some of ICBC's credit card deposits in different places are free, and ICBC has more online banking functions than CCB, which is more cost-effective.

As for the quota, it is a question of bank approval. It is estimated that your card should be around 5000, and the bill says the bill date and repayment date, which is different for everyone. The interest rate is five ten thousandths of the daily interest, with compound interest every month. So I suggest you don't default on the repayment, and don't withdraw cash by credit card.