1. Construction USB KEY certificate is valid for two years. \x0d\ 2。 You can update it one month before the expiration date, or you can update it at the business outlets: \x0d\ 1. You can update the online banking shield certificate through "China Construction Bank Start-Procedures -E Road Escort Online Banking Security Component-Online Banking Shield Certificate Update Tool". \x0d\2。 You can find the option of "Personal Certificate Expiration Update" under the column of "More Services" on the right side of our online banking login interface to replace the online banking shield certificate. When replacing, please insert the original network silver shield into the computer and import the new certificate into the original network silver shield.