1. Visa and MasterCard are the two most common credit cards now.

2. International credit card organizations include Visa International, MasterCard International, American Express International Co., Ltd., Diners Letter of Credit Co., Ltd., JCB Japan International Credit Card Company, etc.

3. MasterCard International has a comprehensive global payment brand. Mastercard International has 20,000 member financial institutions around the world and provides payment services to individuals and companies of all sizes in 210 countries and regions. MasterCard has as many as 19 million acceptance points and merchants around the world. MasterCard International entered China in 1988, and currently all major domestic commercial banks are members. MasterCard International has played an indelible role in helping China's bank card industry from its inception to development. Currently, most of the credit cards of Chinese member banks use the MasterCard brand.

4. Visa International and Visa (also known as Visa):

As the world's leading payment brand, Visa International is composed of more than 21,000 member financial institutions around the world. A non-stock, non-profit international bank card organization composed of institutions. Visa's member institutions offer the widest range of payment products and services, including credit cards, debit cards, stored-value cards, corporate cards, and multi-function smart cards. Visa cards can be used at more than 29 million merchants in more than 300 countries and regions around the world, and can withdraw local currency at more than 800,000 ATMs in more than 130 countries. Visa's network system can process up to 10,000 transactions per second, with annual card transaction volume exceeding US$2.3 trillion. Currently, the global issuance of Visa cards has exceeded 1.1 billion, accounting for approximately 57% of the global payment card market.

5. Visa International entered China as early as the early 1990s and is committed to cooperating with the Chinese banking industry to promote the development of China's payment industry. Currently, Visa has 17 member financial institutions in China, including China UnionPay. As of the end of September 2002, more than 147 million Visa cards had been issued in China, including 535,000 international cards and 10,000 ATMs.

6. There is not much difference between the two cards. They are both internationally renowned brands.