If the writer is a native English speaker, he/she must have been in a hurry, because there are many careless mistakes.
1.It was really a nice surprise to be in touch with after these years (why there is a "with" ?)
to be in touch with you
2.I very much like to explore how we can work together .(The position of "very much" ,but maybe it's ok here)
I would very much like to explore
3. I am more focus on the color toners. (why " am more focus on", not " focus more on " )
I am more focused
4. I need to know where you are strong in, so I will use where you are strong to make me stronger. (why there is a "in")
I need to know what you are strong in
I need to know where you are strong