1. Credit cards of different brands can only be used at corresponding outlets, and China UnionPay can only be used domestically. These brands are just card issuing banks. It is more convenient to use VISA when going abroad to the main areas in Asia-Pacific, Australia and the Americas. It is more convenient to use MasterCard when going abroad to the main areas in Europe, because parking fees, tickets, automatic cashiers and other small things can be used in Europe. UnionPay is a card issuing bank in my country. Its usage rate abroad is relatively low, but it is OK in areas where Chinese people gather.

2. ICBC credit cards are the most widely issued credit cards in China. Currently, the main types of ICBC credit cards include: Peony International Credit Card, Peony Credit Card, and Peony Credit Card; according to the brand of ICBC credit cards, they are divided into: Peony Visa Card, Peony MasterCard and Peony Express Card are divided into: Platinum Card, Gold Card and Ordinary Card according to credit rating; they are divided into commercial cards and personal cards according to the issuing objects, among which personal cards are divided into primary cards and supplementary cards.