commercial communication letter writing

We are Architectural design and build firm , we are loookignf or new business opurtunity. Recently in our country new government formed by newly elected Mp's and Earlier Mp's Retained their seats. We need a letter to congratualte all of them individually and shapre our company profile with them along with the letter to seeking new business opurtunity. We are lookign for School campus, Healthcare, Govenrment buindings, Low cost housing projects and other public infrastructures design, build as well as Project consultancy. selected freelancer has to write letter for congradualte the Newly elected Member of parliment fr the first time as well the previous Mp's those who are retained the seats, Prime mInister, Dy. PM, Province Governors. ( each letter content should be different based on the persons).