我联系的两位印度客人说要来中国看我们的工厂， 而他要我开邀请函 ，请问英文邀请函要怎么写才最好。

谢谢

公司信头
Invitation Letter
To: Whom it may concern 05-01-04
RE: Business Trip
We, （公司名）, is now starting the business relationship with XXX（受邀请公司）In order to enhance our cooperation and know each other more, we would be very glad to take this opportunity to invite the following staffs from XXX受邀请公司 to visit our Office in 中国地名, from 20-02-04 to Feb 28-02-04.（访问时间）

Name: XXX
Sex: Male
Date and Place of Birth: xxxx.
Position: XXX
Passport Nr.: xxxx
Expiry Date: xxxx

Name: XXX
Sex: Male
Date and Place of Birth: xxxx.
Position: XXX
Passport Nr.: xxxx
Expiry Date: xxxx


All the expenses including the medical insurance occurred during their trip in Germany should be born by XXX受邀请公司 We would be very grateful should you issue such a visa for them in order to assist their trip successfully.

Thanks for your attention and best regards in advance.
Bettina Rossa
Position:

(Signature and company chop)
公司名