The Bank of Communications Wal-Mart UnionPay general card is a single-currency card. It only supports UnionPay and can only be used for RMB transactions. If it is a dual-currency card, it will usually have a VISA or MASTERCARD design.
The limit should be determined with reference to your personal circumstances, such as the nature of your work unit, working years and stability, your academic qualifications, whether you have a bank loan (if so, it will be higher), and whether you can show proof of property ( Non-commercial driving license, etc.), whether you hold a credit card from another bank and have a good usage record, age, spending power, etc. The higher these relevant conditions, the higher the corresponding amount.
The annual salary is only used as a reference and does not have much influence.
If you don’t understand, please ask, I hope you can adopt it.