1. Business Department of the People's Bank of China: As the central bank of China, the business department of the People's Bank of China can accept the fourth set of RMB exchange. However, the specific situation may vary from region to region. It is suggested to call the sales department of the local people's bank for consultation first.

2. Business Department of China Bank: China Bank is a state-owned bank, and business departments in some areas may accept the fourth set of RMB exchange. It is also suggested to call the local China Bank Sales Department for consultation first.

China Postal Savings Bank: As a subsidiary of the State Post Bureau, China Postal Savings Bank may accept the fourth RMB exchange in some regional outlets. It is suggested to call the local postal savings bank outlets for consultation first.

It should be noted that because the fourth set of RMB is no longer in circulation, banks may impose certain restrictions on the exchange amount and handling fee, and the corresponding institutions need to be consulted for details.