Providing Keyword List to PPC Marketing Company

[brian]

Well if you are hiring a company then they will be building the keyword list for you. But if you want to increase your outcome than you can share your list to them as you have told earlier the list is built carefully over a much larger time.

I agree Paul. The job is to be done by the hired company.
And yeah sharing your keywords is also a good idea but you will have to see what they came up with first.