annual fee
Credit cards charge an annual fee. Although the annual fee is not very high, it needs special approval to be exempted. Of course, there are also bank regulations now, which can exempt the annual fee after reaching a certain number of times.
International organization fee
International cards are automatically converted into various currencies according to the real-time exchange rate at the time of consumption. This conversion is completed by international card organizations such as VISA and MasterCard, and a handling fee of 1% will be charged.
Exchange rate discount
In order to avoid this cost, it is best to use different cards in any country. At present, most international cards are US dollar cards, but it is more troublesome to go to Australia, and there is no Australian dollar card in China. However, there are euro cards. At present, both Bank of China and Bank of Communications have Euro cards. In addition, BOC and ICBC also have Hong Kong dollar cards.