Do not apply floor finish to this product and ensure that the cleaning product you use is non residual.
Will they be testing the floor afterwards? Often these tiles are loose laid onto access panels so be careful of water ingress.
The product is homogenous so you can lightly sand out any surface imperfections. We supply Dr.Schutz PU Cleaner which is a non-residual product that can be used for cleaning.
A simple buffing with a high speed machine will restore the sheen to the tiles after deep scrubbing.
Use you single disc machine and a wet vac.