Dowin laser Printer Marker Laser Engraving Machine Fiber Ring Spoon Knives For Marking U Desk Jewelry working principle: Marking process: through the evaporation of surface materials to expose the deep materials, or through the chemical and physical changes of surface materials caused by light energy to “carve” traces, or through the burning of some materials by light energy to show the required patterns, characters, etc. This machine can print numbers, Chinese characters, English letters, graphics support automatic coding, serial number, batch number, date bar code, QR code, automatic skip number, etc.
