1) Applicable material: engraving crystal, quartz glass, optics glass, normal glass. 2) Operation system: Windows 2000/XP 3) Picture formats supported: BMP / DXF / DWG / PLT/JPG etc 4) Imported key parts ensure the machine possess high quality and high stability. 5) Packing:1 unit/Plywood carton 6) If you have any special request, the laser engraving machine can also be customized as your fully requirement.Any questions ,please feel free to contact us 7) Specifications & materials as blowing: Item Parameter Laser Medium Nd: YAG Laser Wavelength 532nm Laser Frequency 3000Hz Maximum Engraving Range φ60mmx85mm Maximum Engraving Speed 120000-180000dots/min Continuous Working Time 12hrs Maximum Power of the Whole Machine 1 KW Number of Laser Heads 1 Weight of the Whole Machine 170 kg Dimension of the Whole Machine 750mm×650mm×1220mm Water Medium Deionized water or pure water Cooling Medium R134A