在知識經濟的年代，各種信息技術都是有價值的、能創造財富的資本，也因此成為公司的保密材料。至于保密的等級則要視重要性而定。遇到詢問保密信息的客戶，拒絕自是不可避免，但是要怎樣婉拒又不會失去客戶呢？我們看看下面這封拒絕信是怎么寫的。

Dear Dr. Philips

Thank you very much for your letter concerning our technical training programs. Your tentative plans sound excellent and we are sure that your personnel will benefit from the training you intend to establish.

The courses we have worked out for the engineers in the research department of your East Power Industry Company are the result of several years' effort. Since some of the areas it pursues are of a classified nature both for our purposes and because of industrial regulations, you can understand why it is not possible for us to send you a detailed outline of the program.

We have already referred your letter to one of our extension division. They will contact you within two weeks. The program they have developed is specially established for the engineers in the atomic power application which will prove of the same value to you. Meanwhile, for your most convenience, we are enclosing an article in the June issue of Engineering Research, which describes several corporate training programs for engineering development in the power industry of our country.

Thank you again for your interest in the cooperation of human resource development. And we are also looking forward to your success in this field.

Yours sincerely

（例文來源：《國際商務寫作教程》，對外經濟貿易大學出版社 英語點津 Annabel 編輯）