35W green laser used for Personalized 3d Photo Crystal Cube Laser 3D internal carving glass is a special glass process, in which you can write and engrave 3D patterns in transparent glass. Using RFH's green laser for 3D internal engraving is to use a laser beam to engrave inside the glass without dust and volatile substances, and its safety is guaranteed; moreover, using RFH green laser for internal engraving glass without consumables, does not produce any pollution to the environment.