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A kind of evaluation method in limited time based on dynamic two-dimension code
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A kind of method of payment in limited time based on dynamic two-dimension code
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A kind of method of payment based on dynamic two-dimension code
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A kind of dynamic two-dimension code payment mechanism, payment administrative system
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A kind of dynamic two-dimension code member device, membership management system
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One kind is registered device, method and system
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A kind of many people's method of ordering based on dynamic two-dimension code
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A kind of friendly relation recognition method of meal ordered based on dynamic two-dimension code
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