A professional business letter is one that has all the characteristics of an official letter. This includes the salutation, the reference, reason for writing and the closing. These are written in a clear and concise style. The letter should be simple and avoid any flattering and unsavory comments.
Sample professional business letter
Dear Mr. Bryce,
REF: AFTER SALES
Our service center has been expanded to include an extra point for after sales services, warranty enquiries desk as well as a team of support staff who will not only improve after sales service delivery but will also be logging in all the customer queries into our new support system that will make sure that we improve on service delivery and give feedback faster than we did previously. We hope that this new establishment will make our two companies have closer working relations in future. We look forward to seeing you there.