日常詢函是商業人士獲取信息的一個重要方式。由于詢函是發展進一步的商貿關系的敲門磚，接受者常常根據信件的內容來判斷對方公司。下面是寫作日常詢函的一些通用法則：

1. 直接切入主題
2. 解釋你為什么要寫這封詢函
3. 關于細節的問題
4. 禮貌地提出要求

下面是一篇范文，大家可以仔細體會一下。

Dear Sirs

May we have a copy of your brochures concerning the meeting, which was held on July 10, 2006, for announcing projects on industrial development in the Northwest China.

Yesterday's China Daily included an article about the meeting. Some thoughts and plans were presented on the electronic and water-treatment fields. We would appreciate more details than those printed in the paper.

It would be most helpful if you could send us all the necessary information. We are sure it will be benefited to both of us in the near future.

Yours faithfully

（例文來源：《國際商務寫作教程》 對外經濟貿易大學出版社 ）