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The picture I attached is a 40 stall Toyota dealership shop with in ground lifts, not a car showroom. We have granite floors in there. We have learned over the years to go with dark grout and let the oil seal it instead of epoxy grout. The tile has a texture to it that makes it less slippery than epoxy floors. The only down side that we have experienced so far is broken tiles because of a tool being dropped or someone using a lift with steel wheels but we replace those tile as they break.
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They call that job security
