According to the regulations of the bank, the credit card of China Postal Savings Bank can be used after activation.

It takes about 10 to 20 days to apply for a postal credit card. It takes about 5 working days to apply for approval of the postal savings bank card and 5- 10 working days to issue the card. The speed of bank approval is related to the work efficiency of different bank outlets.

There is no limit on the activation period of the Postal Savings Bank credit card, which means that as long as the credit card is still valid, the cardholder can activate it at any time. Generally, credit cards are valid for more than three years, so they can be activated within two or three years. The card has expired. If you want to continue to use it, you should replace it with a new one. If you don't want to use it, you should remember to cancel the account.