Confocal microscopy is used to detect the composition with the sample area through the shifting from the focal aircraft, one example is in dermatology. Lasers are greatly used for marking and engraving. The benefits of laser marking compared to regular marking are multifold. The marking approach is more effective, non-tactile https://hectorxrig674.tumblr.com/post/641190581180252160/how-to-win-big-in-the-china-laser-marking-machine