(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)
兹邀请由您领导的北京4人代表团来(国家)参加(展览)。该展览将于(日期)在(地点)举行。请您安排来(国家)的必要事宜。展会期间您们将在此逗留*日，所有的费用，包括国际机票、当地交通、食宿、医疗保险和其他相关费用由贵公司承担。我们期待您的访问。
此致
敬礼
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