Customerloyalty(忠诚)isabigpartinbusiness.Nowonder,then,t...
问题详情：Customerloyalty(忠诚)isabigpartinbusiness.Nowonder,then,thatwithnewtechnology,membershipcardsdesignedtokeepcustomersandencouragerepeatbuyinghaveexplodedaroundtheworldinrecentyears.IntheUnitedS...