The Measures for the Administration of Bank Cards have corresponding provisions on this:

Article 27? Commercial banks should charge settlement fees to merchants for overseas bank card acquiring business, and the charging standard shall not be less than 4% of the transaction amount.

Domestic banks sign credit card agency acquiring agreements with overseas institutions, and the profit sharing ratio is 37.5% and 62.5% of the merchant handling fees paid by domestic banks and overseas institutions respectively.

Extended data:

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Relevant laws and regulations of the Measures for the Administration of Bank Cards:

Article 29 The funds in an individual's foreign currency card account shall be deposited in foreign currency cash held by the individual or transferred from his foreign exchange account (including foreign currency account). Personal foreign currency card withdrawal of foreign currency cash in China shall be handled in accordance with our personal foreign exchange management system.

Commercial banks may set up branches inside and outside People's Republic of China (PRC) according to their business needs. The establishment of branches must be examined and approved by the the State Council Banking Regulatory Authority. The branch of People's Republic of China (PRC) (China) is not established according to administrative divisions.

Article 30 The division and merger of a commercial bank shall be examined and approved by the the State Council Banking Regulatory Authority. Commercial banks should use their business licenses in accordance with the provisions of laws and administrative regulations. It is forbidden to forge, alter, transfer, lease or lend the business license.

Baidu Encyclopedia-Bank Card Management Measures