As long as RT-Mart has a POS machine with the UnionPay logo, no matter which bank it is from or which credit card it is, you can use the overdraft card to make purchases

The handling fee for swiping the card is the same as It has nothing to do with consumers who swipe their cards.

The handling fee is a handling fee of about 1 paid by the POS merchant to the bank where the account is opened.

When swiping the card for consumption on the day after the accounting date, there is a maximum of 50 or 56 Interest-free period of 20 or 25 days