I thought about posting something similar yesterday. I like it when names reflect reality. If the part of the factory where the finishes are applied can be called a studio, then stick with that name. If it's more of a shop, then shop may be the better term.
But I'd go with the term that makes the most marketing sense. The two terms have different connotations. To me, "studio" makes me think of fine art and painstaking attention to detail. "Shop" is similar, but brings up images of mass-production with pieces of wood flying through a vinyl-lamination machine...
