... 2.Laser tube (Life):1500 hours 3.Water cooling JK-40 SIGN LASER CARVING MACHINE :This machine can be ... used to carve signs on nonmetal materail.Parameters: Type JK-40Working size150×200mmLaser Power 40WLaser typesealed-off CO2 laser tubeEngraving ... ~45 centigradeWork humidity35-70%Software Artcut,CorelDraw,Photoshop,AutoCADGraphical Data FormatPLT,DXF,BMP,JPG,GIF,PGN,TIFcooling mode Water ...