2. Code of Agricultural Bank of China: ABOCCNBJ；;

3. Industrial and Commercial Bank of China code: ICBKCNBJ；;

4. China Merchants Bank code: CMBCCNBS；;

5. China Bank of Communications code: COMMCNSH；;

6. China Bank Code: BKCHCNBJ.

The above is the main code of the bank.

Functions of different banks

1. National Central Bank: implementing national economic policies, regulating the national economy, and supervising financial institutions and financial markets;

2. National policy banks: These banks are generally not for profit. The function of policy banks is similar to that of the central bank, but policy banks generally implement national economic policies more specifically;

3. Commercial banks: Commercial banks are actually credit intermediary financial institutions and the most important financial institutions in the financial market. The main functions of commercial banks are loans, deposits, foreign exchange and savings;

4. Investment Bank: This bank is mainly engaged in securities issuance, securities underwriting, securities trading, investment analysis, venture capital and other investment-related businesses;

World Bank: Its main function is to help some poor countries get out of trouble.