At present, all credit cards issued by domestic banks bear the UnionPay logo, and all of them can use UnionPay pos machines. International cards, that is, the credit cards of visa brand or MasterCard brand you mentioned, have dual accounts, one is RMB account and the other is USD account. In China, it is paid by UnionPay, and in foreign countries, it is paid by US dollar account of visa brand or MasterCard brand.