有一印度客户要来工厂参观，要求发邀请函，都要些哪些内容？哪位仁兄有没有模板可以参照一下？

提供一个模板供你参考：
TO:whom it may concern
We “A company"are hereby pleased to invite Ms./Mr *** to visit our company for business meeting. The passport details are as follows:

Name: Ms./Mr. ***
Passport No: ******

This letter is being furnished to facilitate the issuance of China business Visa for our guests.

We are looking forward to your kind assistance.

Thanks and best regards,

A company