" and the word "wich" does not exist. Both versions are correct (except for the spelling mistake "furnitue" and the omission of full stops).
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AnonymousWe are going to install the furnitue in the above project tomorrow morningThey both need periods at the end.
We are going to do the installation of furniture in the above project tomorrow morning
AvangiPerhaps "the installation of furniture" is a BrE expression.It sounds fine to me!