The permanent limit of CCB's credit card will be adjusted by the bank according to your credit changes, and the cardholder's application will not be accepted. If it can be promoted, the bank will take the initiative to inform you (usually by SMS). But I'm not sure when to invite you to adjust.

You can apply for temporary credit line by yourself through SMS, customer service hotline, online banking and other self-service channels. If you call the customer service hotline to apply, enter your card number and telephone banking password after dialing, and then select "Credit line inquiry and adjustment" to apply for temporary credit line promotion through voice service. The term of temporary credit line is generally 2-3 months. In addition to your credit status, you will also refer to your credit card records when reviewing the temporary credit line. Therefore, it is best to apply after using the card for a long time, at least 3-6 months. During the use of the card, it is best to diversify consumption transactions as much as possible, and it is best to repay in full.