I have formed a company named MediaCircle.. covering
Designing.. Printing.. Promotional Services..
I will appreciate if I receive some ideas about the introduction letter and a brief concept about company profile.
Thanks in advance

If you click on the following searches, you will find a lot of examples of letters introducing companies of various kinds.

Company Introduction Letter Samples - Google Search (http://www.google.com/search?hl=en&safe=off&q=Company+Introduction+Letter+Samples)

Sample Company Introduction Letter - Google Search (http://www.google.com/search?hl=en&safe=off&q=Sample+Company+Introduction+Letter+)