The word mark can be understood through a dictionary or Baidu Encyclopedia as a synonym for logo, engraving, marking, marking, engraving, printing, stamping, trademark, etc. It has a specific symbol mark to explain the attribution of things , The manufacturer of the product, model, grade, category, quality, size, time, measurement, inspection, audit, inspection, notarization, etc.

Metal laser marking machine uses laser beam to mark permanently on the surface of various materials. The effect of marking is to expose deep substances through the evaporation of surface substances, or to "engrave" traces of chemical and physical changes of surface substances by light energy, or to burn off some substances by light energy to show the desired etching Graphics, text. https://www.cllaser-technology.c...g-machine-for-metal.html