How am I going to write an Introduction letter to Introduce a company?

This should help: www.writeexpress.com/introduction

Hi, seunsmith!

The subject of how to write a business introduction letter is addressed on many, many sites on the Internet. All you have to do is to do a search for them. In addition to the fine answer that you were given above, please click HERE.

When you find one that you like, you can tailor it to your needs. If you would like to post a draft of your introduction letter here, without putting in and contact information, I'm sure that there will be those of us who'll be willing to take a look at yours and make suggestions to you as to how you might make improvements to it.

Thanks!