Single-currency cards are cards with a single currency. Currently, there are only RMB single-currency cards and US dollar single-currency cards; MasterCard is an international card organization, and MasterCard has both single-currency cards and dual-currency cards. Dual-currency cards That is, there are both RMB accounts and USD accounts. If you need to inquire about Ping An Bank's credit card business, you can click the link below and select "My" in the lower right corner - exclusive customer service or follow Ping An Credit Card's WeChat public account (paxyk95511) for consultation. /branch/mkt/bankonline/dist/onlineBankless.html#