Hign-concerned Chemical: None Language: English,Italian,French,German,Chinese Operating System: Windows,Mac Slice Software: LaserGRBL(Window),Lightburn File Format: NC,DXF,BMP,JPG,PNG,GCODE Precision: 0.1mm Voltage: 110-220V CE Certification: Yes Brand Name: T-Trees Origin: Mainland China Certification: CE 1:: Laser Engraving