茲邀請由您領導的北京4人代表團來***（國家）參加***（展覽）。該展覽將於***（日期）在***（地點）舉行。請您安排來***（國家）的必要事宜。展會期間您們將在此逗留***日，所有的費用，包括國際機票、當地交通、食宿、醫療保險和其他相關費用由貴公司承擔。我們期待您的.訪問。
此致敬禮
(Salutation)
I would hereby invite the members of Beijing delegation totally 4 persons (listed attachment) led by you, to come over to ***(country) for *** (exposition), which is to be held at *** (place)during *** (date). Please make the necessary arrangements for your delegation to arrive in *** (country). During the exposition, you will stay here for *** days. All your expenses including international air tickets, local transportation, accommodations, medical insurances and all other related expenses during your stay here will be paid by yourselves. We are looking forward to greeting you in *** (country) very soon.
Yours sincerely, (Signature) 商務邀請函是正式公函，請用單位帶英文擡頭、地址、電話的信紙打印，結尾加蓋公章。