Dear sirs,
We owe your name to the First Commercial Bank at your end, through whom we understand that you are well experienced in the export of engineering equipment with service.
We take this opportunity to introduce ourselves as one of the importers buying various kinds of machines...... Upon receipt of ...... , we shall see what items are of interest to us and pass our enquiries to you.
We anticipate the pleasure of hearing from you in the near future.
2。发送正式邀请函的思路和信的结构安排
发送建立合作商务关系应说明本公司产品的优良品质、市场潜力及获利情况。还应介绍公司经营的具体内容和产品的优势，同时附寄公司的简介、价目表、目录等，以表示本公司合作的诚意。最后表示强烈交易愿望。
Gentlemen,
......
We are one of the leading exporters of First class cotton goods and enjoying an excellent reputation through fifty years' business experience.We are sure that you will be quite satisfied with our service and the excellent quality of our goods.We enclose herewith ......
We are looking forward to your early and favourable reply.
Dear Sirs,
We thank you for your letter of 5th this month,and shall be glad to enter into busineaa relations with you.
Complying with your request,we are sending you ...... Payment should be made by an irrevocable and conformed letter of credit.If you find business possible,please contact us for dffers.