Tj yag-504c Main function: engraving everlasting 2d and 3d images inside the crystal. Advantage: it facilitates large quantities of highly accurate production of highly accurate production of crystal craftworks. Characteristic: it has 8 laser heads, which can engrave the same graphic inside 8 crystals at the same time. Others: it is a mature products and easy to maintain. Technic specification Item parameter Laser medium nd: yag Laser wavelength 532nm Highest frequency 100hz Maximum engraving range 280mm-280mm-90mm Engraving speed 4000-6000dots/min Power of the whole machine 4 kw Laser head number 8 Continuous working time 12hrs Weight of the whole machine 600kgs Water medium deionized water or pure water Weight of the whole machine 600kgs Maximum engraving range 280mm-280mm-90mm Packing:ply wood per unit