1. China Merchants Bank: The invisible credit line of China Merchants Bank's credit card is called China Merchants Bank's e-loan, which is a special large cash installment line with a maximum credit of 3,. According to the comprehensive evaluation of the cardholder's credit condition and card usage, the funds will be transferred from the e-loan account to the debit card, and then repaid in installments every month.

2. Ping An Bank: There are various invisible lines of Ping An Bank, including a special reserve fund for consumption, which is a large special line of consumption. After successful processing, the funds will be transferred to the credit card account, and you can spend it after receiving it, with a maximum line of 3,.

3. CITIC Bank: CITIC Bank also has a variety of invisible lines. Here is the installment line of special cash for new express cash, which is an integer multiple of 1 yuan, with a maximum of 3, RMB. The specific line is determined according to the credit status of customers.