The floor surface, is overlaied with wood veneer and sawn wood of natural wood. Since natural trees are creatures like humans, there are individualized characteristics of each part even in the same tree species. It is natural that the color tone also fluctuates. Under that condition, we manufacture as much as possible in consideration of quality, but the color tone is rarely the same. By fluctuating color patterns for each piece, the unique taste of natural materials will be born.