According to official website, the bank card, online and offline are parallel. Online customers of Bank of Communications credit cards account for more than 50%. The Postal Savings Bank deepened cooperation with postal agents, introduced and issued cards, and improved the marketing ability of outlets. Cross-selling customers accounted for 30. 10%.

Credit card is a kind of card that can be used to spend first and then repay, and can enjoy interest-free period by using bank funds to spend in advance. Overdraft consumption does not require deposits, and can enjoy an interest-free period of 20-56 days, and repay the principal and interest on time.