We begin by Sand Blasting the sink to create a satin finish. We then use a process called PVD which vaporizes chromium & deposits the metal into the sink surface at a micron level, changing its color & adding to its durability. We finalize by added nano-coating, which creates a smoother, more easily cleaned surface. It’s often called ceramic coating, & is used on new automobiles to improve the look & longevity of the finish.