the bank union card cannot be used as a credit card. \xd\ Trade union cards and credit cards do not belong to the same type and cannot be used as credit cards. Trade union cards can be used in projects that cooperate with our company, but they do not have overdraft function. \xd\ Trade union membership card is the identification of trade union members, and it also has the functions of bank card and public transportation payment. ICBC and CityCom provide professional financial and public transportation IC card services and support. Members can enjoy the service and exclusive discount provided by the trade union with the card. \xd\ credit card is a kind of micro-credit payment tool provided by banks to users. It is a special card issued by banks or other financial institutions to those with good credit status for shopping and spending at designated merchants or depositing and withdrawing cash at designated banking institutions. It is a special credit certificate. \xd\ Credit card is a special carrier card with consumer credit, which is issued by banks to individuals and units, so as to make purchases from special units and deposit and withdraw cash from banks. \xd\ Credit cards are divided into credit cards and quasi-credit cards. Credit cards refer to credit cards issued by banks, which give cardholders a certain credit limit, within which they can spend first and then repay; Quasi-credit card refers to the bank's issuance. A quasi-credit card in which the cardholder deposits a certain amount of reserve fund as required, and when the balance of the reserve fund account is insufficient to pay, it can be overdrawn within the specified credit limit. And when we say credit card, we generally refer to credit card only.