a visa card is a credit card. It is a kind of international credit card, and its payment intermediary is an international VISA organization (like China UnionPay). Because the only payment provider for the Olympic Games is VISA, you can only pay for tickets and shopping at Olympic venues through VISA credit cards.

international credit card (RMB is used for payment through UnionPay, and USD is used for payment through VISA or MASTER, so it is also called dual-currency card), and another international payment organization is MASTER. :

visa card can't be used in China, and it can only be used in POS machines with visa logo abroad. It is more cost-effective to use visa card abroad. UnionPay card supports domestic and foreign POS machines with UnionPay logo to swipe their cards.

the card number of unionpay credit card starts with 62, while that of VISA credit card starts with 4. The UnionPay credit card has the UnionPay logo on it, while the VISA card face is the VISA logo.

as for the use, there is basically no difference in China, but if it is a card in the VISA single currency, such as the Great Wall International Card of Bank of China, it is still troublesome to use it in China. VISA's coverage abroad is much larger than UnionPay's, and its accreditation procedure is also very high, but UnionPay can also be used in many countries now.

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