邀请信是邀请亲朋好友或知名人士、专家等参加某项活动时所发的请约性书信。它是现实生活中常用的一种日常应用写作文种。所以很多人不知道怎么去写，下面是出国留学网为大家整理邀请函模板供你参考。 invitation letter hello mr.xxxx, after such a long business relation we have had, and looking forward to a better and bigger relation betweenour two compa...