If you write a business letter to a specific person representing an organization, start the message with treatment. In business correspondence is appropriate to use the word "respect". If you turn in a letter to a number of people or the names of representatives of the destination you do not know, use of a letter "Dear Sir" or "Dear Sirs" (if the message language - English).
After treatment does not go directly to the question that you are going to be solved by the letter. First, write a few sentences showing your attitude to the organization of destination. You can use standard phrases such as, "Our company expresses its respect and wishes prosperity to your business."
If the organization in which you write, or its representatives in the recent past provided services your company supplies goods or contributed in any process, be sure to thank them for it at the beginning of the letter. You can write: "We express our appreciation to you for ...", "gratefully acknowledges ...". In this part of only one proposal, especially if you want to mention specific employees of the organization, contractor, write a separate letter of thanks.
Only after all the best wishes of the recipient and his representatives go to the heart of the matter. In this piece of writing is appropriate to use "Hereby we inform you ..." "Please note ...". Even if the issue that caused the writing of the letter, unpleasant or causes conflict between organizations follow to the letter all the rules of courtesy, be tactful.