1. Apply for a credit limit increase at a bank branch: Go to any Postal Savings Bank branch, bring your valid documents (such as ID card, passport, etc.) and bank card, fill out the application form, and bank staff will help you Complete the credit increase application.

2. Apply for a limit increase in the bank's mobile banking or online banking: Open the bank's mobile banking or online banking application, log in to the account, select the "Credit Card Service" or "Limit Management" and other function portals, and then select Just "Apply for a quota increase".

3. Apply for a limit increase through the bank customer service hotline: Call the Postal Savings Bank customer service hotline, enter the corresponding information according to the voice prompts, select the "Credit Card Service" or "Limit Management" and other functional portals, and then select "Apply for a limit increase" Just click "Uh".