邀请外国友人商务来访的审批怎么写啊

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客户邀请函：
A FORMAL VISA INVITATION正式签证邀请函

Dear Sir or Madam:
We are very pleased to invite Mr. ＊＊＊ （全名）
Passport No. , delivered 护照号码
Expiration date 有效期
Date of birth: 生日
come to our factory for visiting and business negotiation. 我们很荣幸地邀请****先生到我厂参观以及进行商务谈判。
The business trip will start from 18th April 2005 .商务行程于*****开始
And because the long business co-operation in future between ＊＊对方公司名 and us,
they will come to China for many times. 由于以后***与我司的长期商务往来，他们将会来中国很多次。
Please note, however, that we don’t assume any legal or financial responsibility whatever regarding the presence of ****** in China. 然而，请注意我们对其在中国的一切行为不承担任何法律和金融责任。
All expenses of ＊＊＊＊＊’Sjourney to/from China, their stay in China as well as health insurance will be borne by their employers. ***所有往返中国的开支，停留在中国的开支，以及健康保险由他们的顾主承担。
We send you our kindest regards and best wishes for a pleasant trip.在此送上我们最诚挚的问候和祝愿，祝旅途愉快。