Suppose you need a condenser for your Radio Cassette Recorder of the brand "Red Lantern", and you can't find a new one in the city you live, and the one in the machine happened to be so rusted that you don't have a clue to what the serial number might be. Write a letter to Shanghai Radio Plant asking for the information as to where you can get a condenser.
参考范文
Room 413 Building 6
Beijing Foreign Studies University
Beijing
Jan. 1, 1997
Shanghai Radio Plant
180 Hunan Road
Shanghai
To Whom It May Concern:
I am in great need of a condenser for may Radio Cassette Recorder of the brand "Red Lantern" produced in your factory. The original one has been worn out. I have been using it for my English study every day. As you know, both the radio and the recorder don't work without this vital part. And without the recorder my English study is affected. I have been looking for a new one, so far I haven't located one. Unfortunately the one in the machine has rusted so badly that I don't have a clue to what the serial number might be. Could you please help me?
If you have the correct condenser in stock, please let me know the price, and I'll send you the money to mail-order one. If you don't have the piece but know where I can get it, please forward that information. I am looking forward to your early reply.
Yours truly
Li Wei