What is the difference between the 6-character and 4-character credit cards of China Construction Bank?
there is no difference. 6 starts with UnionPay card, only RMB account, and 4 starts with VISA card+UnionPay double identification card. Besides RMB, there are dual-currency accounts or multi-currency accounts in US dollars, which are more suitable for overseas use, in fact, that is, the credit card organizations belong to different organizations. What should be distinguished is generally based on the card level, not on the card type, such as gold card, platinum card and diamond card, which is the difference.