What's the difference between visa card and master card?

In addition, I would like to remind you that if you use it in Hong Kong and Macao, it is most appropriate to choose UnionPay's credit card route, because UnionPay is directly settled in RMB. Visa and master first convert Hong Kong dollars into US dollars, and then convert US dollars into RMB. VISA 1959, Bank of America issued the first bank credit card, 1966, and American Banking Service Company was established. 1970 BSC Company was renamed as National Bank Americard INC)(NBI) to provide credit card services for banks in the United States. 1977, NBI was reorganized into visa international, namely visa international group. VISA card international organization is a credit card organization composed of members of international banks. It has no shares and belongs to a non-profit organization. Headquartered in San Francisco, California, USA. VISA helps members develop various VISA payment tools (also known as credit cards) and traveler's checks; Provide various visa products and services for members; Help members make profits by using VISA products and services; Reduce the repeated investment of members in the network, and provide automatic "cashless" payment tools and systems for members, consumers and special merchants. MasterCard MasterCard International established an internationally accepted credit card system in the late 1950s and early 1960s, and it immediately became popular all over the world. 1966 established the Interbank Offered Rate Association. 1969 the bank card association purchased the patent right of Master Charge, and unified the name and style of the credit card of the issuing bank. In the following ten years, Master Charge's original name was changed to Master Card. MasterCard International is a non-profit association, including financial institutions all over the world. Its members include commercial banks, savings and loan associations and credit cooperatives. Its basic goal remains unchanged: to communicate the information exchange of bank cards of domestic and foreign members, and to facilitate card issuers, regardless of their size, to enter the bank card and traveler's checks market and seek development.