I am a building materials company owner... I want to write a letter to prospective companies to buy products from my company... can anyone help me in writing a letter..?

Hi, nikkerratti!

You know more about your business than anyone else does here. If you would like to post a draft of such a letter here, without putting any contact information in it, I'm sure that there will be those of us who'll be willing to take a look at it and make suggestions to you as to how you might make improvements to it.

Thanks!