This situation is because the bank has given the user a certain amount of credit.

The Agricultural Bank of China bank card shows a credit card limit of 30,000 yuan because the bank has given the user a certain credit limit.

Credit line refers to a flexible, convenient, and recyclable credit product provided by banks to customers. As long as the credit balance does not exceed the corresponding business variety indicators, regardless of the cumulative amount and number of issuances, the credit limit is Short-term credit can be provided quickly to customers.