Another widely used machine is laser marking machine. In simplest terms, laser marking is a permanent process that uses a beam of concentrated light to create a lasting mark on a surface. Typically performed with a fiber, pulsed, continuous wave, green, or UV laser machine, laser marking encompasses a wide variety of applications. The most common types of laser marking applications are annealing, carbon migration, discoloration, engraving and etching.http://www.legentlaser.com/fib....er-laser-marking-mac