Personal credit or credit limit has reached the standard. Everyone will have their own credit limit in the credit information center. Once this quota is reached, it is impossible to continue to increase the quota. Personal qualifications are not up to standard. Because of their own qualifications, such as work, credit information, property, etc., these users can't meet the bank's standards, and naturally they can't increase the credit card limit.
I've been using the card for some time, but the limit hasn't increased. Then there may be something wrong with their consumption habits. Many banks will have their own consumption preferences. For example, Bank of China likes to spend a lot in nightclubs and spas, while Bank of Communications likes users to spend a little, and the bills are not in installments.