Dear...
Thank you for taking the time out of your busy day to meet with __(us/me)__ on __(date)__. You have an impressive facility and it certainly looks like you are running a very successful business. It was a pleasure meeting you __(first name)__, and __(we were/I was)__ delighted to have been given the opportunity to introduce our __(type of products/services)__ to you.
I hope you have had a chance to look over the __(material/proposal)__ (we/I)__ left for you. After reviewing our discussion and the points you brought to __(our/my)__ attention, __(we are/I am)__ more confident than ever that we can offer sound and cost effective solutions to meet your needs. It just so happens that one of our areas of expertise lies in the __(type of area)__, which would be a perfect match for your __(type of requirement)__ that you mentioned in the meeting.
__(We or I)__ appreciate the opportunity to do business with you, __(first name)__, and __(are/am)__ most eager to provide you with the kind of solutions you are looking for. I look forward to our next meeting and will be in touch with you soon to set up an appointment.
Sincerely,