- 問題詳情:Customerloyalty(忠誠)isabigpartinbusiness.Nowonder,then,thatwithnewtechnology,membershipcardsdesignedtokeepcustomersandencouragerepeatbuyinghaveexplodedaroundtheworldinrecentyears.IntheUnitedStates,thenumberofcustomermembershipcardsnowstandsa...
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