求份建交函 感谢操作一：拟写建交函 　　我公司是1952年成立的，专营玩具和工艺品，现在已经成为中国最大的进出口公司之一

　　Dear Sir or Madam,
　　Nice to contact you !We are glad to know your name and address on the Internet . Here writing you with expectation of establishing business relationship . Now we take this opportunity to introduce our company.
　　公司名字was founded in 2005 is located in 公司地点. We have a very large international business with lots of countries. The main export business: 产品名字.
　　If something is attracting ,please let us know, then we should send you the price sheet. Hope our products meet your market. So that we can start our bbusiness relationship for mutual benefit.
　　Thanking you in advance and looking forward to having your kind views on our business cooperation proposal.
　　Your prompt reply would be highly appreciated waiting for your kindly reply.
　　Yours faithfully
　　Fax:+86-413-758****
　　Mobile:+86-1514
　　www.****.com 公司网站
　　你是新手吧,我也是.这个是我前几天用的,希望对你有帮助

正如你所说,主题当然是写主题了.
写的主题目的就是想让收信人大致了解一下这封信是写什么的.
比如你想询价一台笔记本的价格,那么主题就inquire about notebook

主题起码要明确,文章得有一个漂亮的标题.
内容一定要和主题相对应 别写跑题了.
结尾一定要有总结性,突出主题.
希望你能根据我的建议写出一篇绝世好文.