... laser beam strong function software scan with high precision High precision laser engraving machine for JewelryFeatuer:High accuracy,swift ... metal and non-metal,such as stainless steel,carbon steel,alloy steel,spring steel,copper plate,aluminium plate,other metal ... 0.3mmMarking speed: ≤7000mm/sMin.Line Width: 0.15mmRepetition Precision: ±0.01mmElectric Power Demand: 380V/50Hz/100ACooling System:Water ...