The card number printed on each bank card is unique. The number at the beginning of the card number of China Bank is different according to the card type. The Great Wall Electronic Debit Card of China Bank starts with 4563. At the beginning of 622760 is the Bank of China BOC City Card; At the beginning of 438088, it is China Bank Air China bosom friend credit card; Bank of China BOC series VISA standard card, ordinary card /VISA university ID card beginning with 409666.