1. The account number is 19 digits, 1-4 digits are the area code, and 5-8 digits are the branch number.

2. The passbook account number is 19 digits like that of a general savings card. The passbook number starts with 3, the card number starts with 6 or 95588 (now very few), and the credit card number has 16 digits and starts with 6.

3. The number of digits in the account varies depending on the nature of the card. There are 19-digit cards, and there are also a few high-level cards with 16 digits. The meaning of the 19 digits of UnionPay cards:

The 1-6 digits represent the issuing bank;

The 7-10 digits represent the card-issuing region;

The 11th digit represents the card type ;

The 12th to 18th digits are the card issuance sequence number;

The 19th digit is the check digit.

Industrial and Commercial Bank of China

Industrial and COMMERCIAL BANK OF CHINA (ICBC, ICBC) was established on January 1, 1984. The head office is located at No. 55, Fuxingmennei Street, Beijing. It is a large state-owned commercial bank and one of the four major banks in China. Industrial and Commercial Bank of China has the largest customer base in China. It is one of the largest commercial banks in China and one of the world's top 500 companies. Its basic mission is to raise social funds and strengthen credit through financing activities at home and abroad in accordance with national laws and regulations. Fund management, supporting enterprise production and technological transformation, and serving my country's economic construction.