... design strong features and easy to use SH-690 laser cutting and engraving machine Applicable mateicals >Plexiglass,acrylic,wooden ... crystal,ceramic tile,bamboo,grantile,marble,resin etc. non-metal materials.Applicable industry >Art gifts,cloth toy,marble,grantile ... acrylic etc. industries3.Technical parameters > Laser power :60W(70w,80w,100w -optional)Laser type:Hermetic CO2 glass tubePower supply:AC220 ...