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How long is the validity period of China UnionPay Express Pass Key?
30 seconds. China UnionPay Express Key is China UnionPay Express Payment Code, and the validity period of China UnionPay Express Payment Code is 30 seconds. During this period, you can scan the code for related operations, but after 30 seconds, this payment code will be invalid and cannot be used. China UnionPay Express APP is a strategic mobile payment product shared by commercial banks, industrial parties and China UnionPay.
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