this is our company new machine,the main strongpoint of other machine,one is the Max eangraving range can reach 300mm*200mm*80mm,another is this machine used 200Hz laser Frequency,can 10000-12000 dots per minute.attache is the TJ YAG-524B machine technical of index,pls check it. Item Parameter Laser Medium Nd: YAG Laser Wavelength :532nm Laser Frequency: 200Hz Maximum Engraving Range: 300X200mmx80mm Maximum Engraving Speed:10000~12000dots/min Continuous Working Time :12hrs Maximum Power of the Whole Machine: 4 KW Number of Laser Heads :1 Weight of the Whole Machine :350 kg Dimension of the Whole Machine :700mm?60mm?530mm Water Medium :Deionized water or pure water Cooling Medium: R407C