Credit Card (English: credit card) is a non-cash payment method and a simple credit service. Credit cards are generally plastic cards with a length of 85.6 mm, a width of 53.98 mm and a thickness of 1 mm (the size is defined by ISO 781 and 7816 series documents), which are issued to cardholders by banks or credit card companies according to the user's credit and financial resources. Cardholders do not need to pay cash when they use credit cards, and they will repay them on the checkout date. Except for some credit cards combined with financial cards, general credit cards are different from debit cards and ATM cards, and credit cards will not directly deduct funds from users' accounts.