1. China Construction Bank Longka Credit Card has 7 digits after the signature column. The first 4 digits are the last 4 digits of your card number, and the last 3 digits are the security number (i.e. CVV2/CVC2/CVN2/CAV2 code, etc.).

2. You can see the number in the format of "xx/xx" on the credit card of China Construction Bank, which represents the validity period of the credit card. The number before the symbol "/"indicates the month, and the number after the symbol "/"indicates the year. For example, "8/24" means that the validity period of this credit card is August 224.

if you want to continue to use your credit card after its expiration date, you can apply to the bank for a replacement card before it expires. After you apply for a new credit card, the old card will be invalid. Extended information

Credit card points of China Construction Bank are valid for 5 years. When cardholders accumulate credit card points to exchange their favorite gifts, they should never ignore the validity period of credit card points, which is an important factor, otherwise their hard-earned points will be "zeroed" and they will be further away from their favorite gifts.

The credit card points of CCB are valid all the year round during the validity period of the card, and the points can be accumulated and redeemed after the cardholder renews the card upon expiration. If the cardholder fails to renew or cancel the card at the expiration date, if there is still a normally used Longka credit card in his name, the points of the cancelled card can be transferred to other cards in the cardholder's name, and if there is no other credit card, the points of the cancelled card will be cleared.

to sum up, the credit card points of CCB are permanently valid (except for the long card of CCB Volkswagen), and users don't have to worry about the expired points, which is different from many bank credit cards, which is one of the advantages of CCB credit cards.

how to calculate the credit card points of CCB official website-CCB?