To meet the requirements of international market, our company develops TJ YAG-504C laser subsurface engraving machine which accords with the CE standard of EU. That model possesses the functions and virtues of the TJ YAG-504 model, with 8 laser heads, thin dots, green laser, it can engrave the same graphics inside 8 workpieces at the same time, which facilitates large quantities of highly accurate production of highly accurate production of crystal craftworks. Technic Specificatioin Item Parameter Laser Medium Nd: YAG Laser Frequency 100Hz Engraving Speed 4000-6000dots/min Maximum Engraving Range 280mm¡Ã280mm¡Ã90mm Laser Wavelength 532nm Power of the whole machine 4 KW Laser Head Number 8 Water Medium Deionized water or pure water Cooling Medium R407C Spare Parts Xe-lamp(400hours continous working) Continuous Working Time 12hrs Electrical Connection 12hrs Weight of the whole machine 238kgs Control unit 106kgs Cooler unit 98kgs Dimension of the Whole Machine 980mm¡Ã860mm¡Ã1200mm Room temperature 15-35 Engraving time 50X50X80mm 10mins 30X20X20mm 45 mins