1. The current validity period of Bank of Communications credit cards is 5 years. The validity period of the supplementary card is the same as the validity period of the main card. Users can check the expiration date of the credit card on the face of the credit card they hold.

2. The validity period of a credit card is directly below the credit card number. There are four numbers. The first two digits refer to the month and the last two digits refer to the year. For example, if 11/21 is displayed on the card, it means that the credit card is in Expires on November 31, 2021.

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