CCB does not accept credit cards from other banks.

You can apply if you meet the conditions for applying for a CCB credit card. The basic conditions for applying for a CCB credit card are: aged 18 to 70 years old and have full capacity for civil conduct; have a stable career and income, and be able to repay your credit card on time. Pay principal and interest and have good credit. This requirement is not high. If you work in a formal unit, your unit pays five social insurances and one housing fund continuously, and your personal credit record is good, it is possible to get a credit card.

As for the number of cardholders, there seems to be no specific regulation, but it is best to apply for too many. If the accumulated credit limit is too high, other banks will be less likely to approve the card.