Laser annealing system is a reformation of surfaces of materials or surface heat-temper marking process. The heat generated by the high temperature of the laser beam results in an oxidation process beneath the surface of the material, causing a change of color on the surface of the metal. This murky, long-lasting mark is perfect for medical devices where removal of material is forbidden to safeguard performance and integrity of the same. In simpler terms, laser annealing achieves the annealing process by using a laser, heating the surface of materials rapidly and permitting it to cool by itself, and this procedure can be achieved in the open air.