Laser subsurface engraving machine is laser processing equipment integrating optics, machinery, and electron. It adopts the laser technology, computer control technology, and high precision, high efficient Servo control system. The machine can engrave all kinds of exquisite perfect three-dimensional pattern inside the transparent crystal glass in different specs and shapes. LD-EG-502 laser Sub-surface Engraving Machine is 8 heads laser machine; it could engrave the image in 8pcs blank crystal at same time. It suitable for the crystal gifts group working. The products will give person pure-clear crystal and fine noble visual image impression, which is ingenious for your home decoration.