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LED light Laser Marking Machine/Copper laser engraving machine 1. Technical Parameters: Type LB-MF10 LB-MF20 LB-MF30 Power 10w 20w 30W Beam quality M2≤1.4 M2≤1.8 M2≤1.8 Speed ≤7000mm/s ≤8000mm/s ...