TJ YAG-522 laser subsurface engraving machine obtains the following characteristics: first, take a 3d photo of one or more persons with a 3d camera and it can engrave 3d everlasting portraits inside crystals. This adopts the advanced galvanometer scanner technology to greatly increase the engraving speed; and it adopts the all-in-one structure to greatly save the operation space. TJ YAG-522A Technical Specification Laser Medium: Nd: YAG Laser Wavelength: 532nm Laser Frequency: 200Hz Maximum Engraving Range: Φ60mm?5mm Maximum Engraving Speed:8000~12000dots/min Continuous Working Time: 12hrs Maximum Power of the Whole Machine:4 KW Number of Laser Heads: 1 Weight of the Whole Machine: 350 kg Dimension of the Whole Machine:700mm?60mm?530mm Water Medium: Deionized water or pure water Cooling Medium: R407C