It can only be used on UnionPay equipment in the United States. The penetration rate of UnionPay equipment in the United States is not as high as that in China. Generally speaking, there is no problem in using it in big cities. It is recommended to apply for a full currency credit card at the same time. You can use UnionPay through the UnionPay channel, but you can use a full currency card instead of UnionPay. At present, there are two kinds of all-currency cards, VISA and MASTERCARD, both of which are free of currency exchange fees. Cardholders can apply directly in official website.