It's a small company that specializes in the supply of diesel ( petroleum product) to factories, schools, Banks, etc here in NIGERIA, as a result of the incessant electric power outage

Hi, tenuuji!

I'll answer going under the assumption that this is a business that you have.

I'm sure that you know more about your business than anyone else here.

My suggestion would be for you to start a draft of such a letter on this thread, without putting any contact information in it. If you do that, I'm sure that there will be those of us who'll be willing to come along and make suggestions as to how you might make improvements to it.

In your letter, you should describe who you are and what your business is and does, and how it might be of value concerning usage by the potential customer. You then ask them politely, in the letter, for an opportunity to discuss those things with them.

Via clicking on the following links, you'll find samples of ways that you might draft such a letter that you might then tailor to meet your needs.

Sample Business Letters and Forms

Free Sample Sales Letter: Example of How to Write a Persuasive Business Marketing Letter

Introducing a sample introduction letter template tool to assist leaders.

Letter Samples - Free Letter Templates - Personal and Business Letter

Sample Business Letters and Forms

Idea Cafe Small Business Archive: "Company introduction letter"

Introduction Letters

Sample business letters by Quazell

Business introduction letter... Here's a sample business introduction letter.

Mid-career Job Offer Letter Sample: Introduction and Sample Mid-career Job Offer

Thanks!