It is a CVD2 code. The CVD2 code is a number used by banks to verify bank cards. There are usually three digits in the middle and lower part of the bank card. CVD2 code definition: Also called card record number, it is a three-digit Arabic numeral, calculated and generated according to the algorithm of Agricultural Bank of China corporate standard QB/ABC7-2001 "Bank Card Encryption Verification Algorithm" CVD2. It is located on the third line of printed information on the card surface (the third line is divided into two parts of information: CVD2 code, unit card mark: DWK). The distance between the center line of the line where the card record number and unit card mark are located and the bottom edge of the card is 6.0 mm.

1. Classification of Agricultural Bank of China cards:

"Agricultural Bank of China Bank Card Encyclopedia" introduces the categories of credit cards, debit cards and co-branded cards

Among them, credit cards are divided into quasi-credit cards and credit cards , debit cards are divided into national issuance and local issuance, co-branded cards are classified according to the industry of the co-branded unit, and various types of cards are introduced according to the issuance time. The pictures in "Agricultural Bank of China Bank Card Directory" are basically genuine color photos of the actual products, and have been processed by computers to provide better viewing and printing effects.

1. Agricultural Bank of China Credit Card

(1) Jinsui Standard Credit Card

(2) Theme Credit Card

2. Chinese Agriculture Bank Debit Card

(1) Golden Harvest Debit Card

(2) Golden Harvest Constellation Card

3. Golden Harvest Huinong Card

(2) Huinong Credit Card

(3) Huinong Co-branded Card

4. Private Bank Card< /p>

5. Local version debit card

2. Credit card and debit card:

1. Credit card (English: Credit Card), also called credit card. It is a non-cash transaction payment method and a simple credit service. Credit cards are issued to cardholders by banks or credit card companies based on the user's creditworthiness and financial resources. Cardholders do not need to pay cash when making purchases with the credit card, and repayment will be made on the bill date.

Credit cards are divided into credit cards and quasi-credit cards. Credit cards are issued by banks and give cardholders a certain credit limit. The cardholders can consume within the credit limit and then repay. A credit card; a quasi-credit card refers to a quasi-credit card issued by a bank. The cardholder deposits a certain amount of reserve as required. When the reserve account balance is insufficient for payment, the quasi-credit card can be overdrawn within the prescribed credit limit. The so-called credit card generally refers to a credit card only.

2. Debit Card refers to a bank card that deposits first and then consumes (or withdraws cash) without overdraft function. According to their different functions, they can be divided into debit cards (including savings cards), special cards and stored-value cards. Debit card is a credit tool with functions such as transfer settlement, cash deposit and withdrawal, shopping and consumption. Debit cards cannot be overdrawn. Debit cards have the functions of transferring money, depositing and withdrawing cash, and spending money. A co-branded card is a bank card jointly issued by a card-issuing bank and a for-profit institution. The most common is a co-branded debit card, which is a bank card with a co-branded nature developed on the basis of a debit card.