Further to our meeting held at your office in kindly find below our best rate as agreed.

Please clarify your question

Um.. are you asking is that worded correctly? In kindly is meaningless; perhaps you meant just kindly. Further to sounds better as pursuant to.
I find such lingo sort of tedious, when straight talk will do just fine. It sounds like someone trying too hard.
'Below is our best rate in writing, as agreed to in our meeting of xx/xx.'

I would assume English is not your first language. What is it that you are asking?