(Salutation)
IwouldherebyinvitethemembersofBeijingdelegationtotally4persons(listedattachment)ledbyyou,tocomeoverto___(country)for___(exposition),whichistobeheldat___(place)during___(date).Pleasemakethenecessaryarrangementsforyourdelegationtoarrivein___(country).Duringtheexposition,youwillstayherefor___days.Allyourexpensesincludinginternationalairtickets,localtransportation,accommodations,medicalinsurancesandallotherrelatedexpensesduringyourstayherewillbepaidbyyourselves.Wearelookingforwardtogreetingyouin___(country)verysoon.
Yourssincerely,(Signature)