621799 beginning: postal savings bank IC green card debit card; green card pass card can be regular call mutual transfer, and can be based on the mother card for the daughter card.
Beginning with 621788: Bank of China Debit IC Platinum Card; Platinum Card points are valid for a long time, and you can enjoy value-added services such as preferential merchant discounts and airport VIP channels.
Beginning with 621700: Longkat Debit Card of the Construction Bank; Longkat adds functions such as multiple accounts, investment and wealth management, and other wealth management contracting services on the basis of the original traditional bank card functions.