Dear Mr.Wang,
How are you?
Many thanks for your invitation,we will reply you whether to attend as soon as we confirm our schedule.If for some reason we cannot visit your exhibit booth,could you please give us a short clip about your new products.Thank you very much.
像这种回复邀请函的最好去福步问,bbs.fobshanghai.com,那里有很多专业人士