中国银联
An acquiring bank (also known simply as an acquirer) is a bank or financial institution that processes credit or debit card payments on behalf of a merchant. The acquirer allows merchants to accept credit card payments from the card-issuing banks within an association. The best-known (credit) card associations are Visa, MasterCard, Discover, China UnionPay, American Express, Diners Club, Japan Credit Bureau and Indian Rupay.