外贸书信——介绍信

How to write Letter of Introduction
1. identify the person you introduce
2. ask for help (why and what kind of help is expected)
3. express your gratitude in advance and your wish to reciprocate

eg.
                                         Letter of Introduction
                                                                                          May 8, 2007
Mr. M. C. Ma
China Resources Company
Hongkong

Dear Mr. Ma,
    This letter will be handed to you by Mr. Frank Chadwick, our senior representative, who will be spending much of his time during June and July in the Far East, where we are anxious (1)to extend our interests. We feel that we (2)cannot do better than to arrange for him to get in touch with you upon his arrival in Hongkong. With your knowledge and experience of conditions in the Far East you are better able to give the help he will need than anyone else we know. We hope it would not be too much to ask you to (3)provide Mr. Chadwick with letters of recommendation where you think these would be useful.
    We shall (4)regard as a personal favour any help you give Mr. Chadwick and will always be very happy (5)to reciprocate.
                                                                                   Yours faithfully,

(1) to extend our interests  扩大我们的业务（即扩大贸易）
(2) cannot do better than    最好的方法
(3) provide Mr. Chadwick with letters of recommendation   向……提供推荐信
(4) regard as a personal favour   对……的帮助感同身受
(5) to reciprocate  报答