Dear ______________
It was with great pleasure that I read your announcement of the formation of your new company. You have certainly chosen an area that is coming into its own. I know that with your background, expertise and enthusiasm, your firm should make quite an impression in the industry.
My congratulations and best wishes for your success.
Dear _______________ (name of the firm)
When we received your notice of expansion, we at __________________ (name of firm) were elated.
There are few firms that can boast of the success you have achieved over such a relatively short period of time. A great deal of that success, in our opinion, must be directly attributed to your strong leadership and the sense of direction that you provide.
Please accept our heartiest congratulations and best wishes for your continued success.