UnionPay expenditure is a bank card online transaction transfer and clearing platform jointly built by China UnionPay and commercial banks, which supports all types of UnionPay cards and online payment. UnionPay online payment business supports transaction types such as consumption, pre authorization, account verification and transfer, and provides Internet payment notification function, which can be widely used in the following business fields. 1. Online shopping supports domestic and cross-border online shopping malls, and supports shopping websites in the form of group buying, second killing, etc. 2. Online payment supports the public
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