For example, the credit cards launched by Ping An Bank are classified into different grades, and the main card fees are as follows: the annual fees of standard ordinary cards range from 65 yuan/year to 100 yuan/year, the annual fees of standard gold cards range from 200 yuan/year to 300 yuan/year, and the annual fees of high-end co-branded cards, platinum cards and diamond cards can reach 400 yuan/year or above. In order to attract customers, some banks will offer annual fee-free concessions to certain types of credit cards. For example, China Bank and China Agricultural Bank's Puka and Gold Card are exempt from the annual fee in the first year, and the annual fee in the following year can be exempted after swiping the card for a certain number of times.