Credit cards starting with 6259 are UnionPay single-logo credit cards, and they are also IC chip credit cards. There are actually quite a lot of card types involved. You can go to China Construction Bank's credit card website - credit card application - credit card product path Query

At the same time, this IC chip can encrypt the data in the card and is non-copyable, effectively preventing the card from being copied and stolen. It is much safer than cards with single magnetic stripe media. In addition to the original card payment method, the poster can make card payments at merchants represented by "UPCash" and directly conduct card transactions at merchants that support "Quick Pass". Both of these payment methods do not require password verification and verification. Verify signature, very easy to use.