Car service station or 5542

Self-service gas stations and other types, the popular point is to open the credit card machine in the gas station in the name of the gas station and credit the money in the credit card into the account of the gas station. Now there are supermarkets in general gas stations, and their (merchant category code) is 5399.

All kinds of comprehensive supermarkets or 54 1 1

In grocery stores and supermarkets, the money spent on credit cards goes into supermarket accounts.

If you want to know if he is a UnionPay standard MCC, just ask the cashier directly. If you want to cash back, you can add it at this point next time.