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Who knows the codes of each bank when swiping a credit card at the Carrefour cashier?

The first three digits represent the acquiring bank. This code is consistent with the account-opening bank code in the personal credit report. The corresponding relationship between the account-opening bank codes is as follows:

102: Industrial and Commercial Bank of China

103: Agricultural Bank of China

104: Bank of China

105: China Construction Bank

301: Bank of Communications

302: CITIC Industrial Bank

303: China Everbright Bank

304: Huaxia Bank

305: China Minsheng Bank

306: Guangdong Development Bank

307: Shenzhen Development Bank

308: China Merchants Bank

309: Industrial Bank

310: Shanghai Pudong Development Bank

100: Postal Savings Bank

001 means the acquiring bank is China UnionPay

For example: 310 4401 4814 0001

310 means Shanghai Pudong Development Bank POS acquiring order, 4401=Guangzhou City, Guangdong, 4814=Telecom Services