English certificate for traveling abroad, please give a professional answer. High score rewards are waiting for answers online

To American embassy:

Mr. Yang Gaiyu, who was born on 1958.11.13, is working as Vice General Director in our units. His monthly salary is about 8000 RMB. He has been allowed for a leave to visit America in Jan. and Feb. 2008.

We want to ensure that we will keep his position during his visit in Europe. We also guarantee that he will come back to china and continue to work in our units after he returns from Europe.

Name: China Telephone Directory Corporation Shandong Branch

Add: No.52 Jingsan Rd. Jinan City

Signature of the leader

Seal

The above content can be modified accordingly according to your own situation.