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Title: playing cards invisible ink - PowerPoint PPT Presentation
Description: 9999994242, , Specification : luminous invisible cheating playing card is for contact lenses. High quality luminous marked cheating playing cards. Marked cards can be used as long as one year. High quality marked cards can be seen under various light while can not see the marks with naked eyes. Big mark in the middle and small marks on four corner are available. Marks can be also customised. – PowerPoint PPT presentation
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