When China Merchants Bank transfers money, it shows that the transfer amount exceeds the limit, indicating that the user's transfer and withdrawal limit exceeds the bank's regulations.

The daily cumulative withdrawal amount of bank cards of different banks is mostly 20,000 yuan, but the single limit of ATM machines is quite different.

1. Bank of China, Industrial and Commercial Bank and Industrial Bank have a single sum of 2,500 yuan.

2. Everbright Bank, Bank of Communications and Bank of Qingdao have a single sum of 3,000 yuan.

3. The maximum amount of some machines in China Merchants Bank is 10000 yuan.

4. The maximum amount of ordinary ATMs of Agricultural Bank is 2,000 yuan, and the maximum amount of deposit and withdrawal machines is 5,000 yuan.