... (optical) Marking depth: 3mm Min. Character: 0.3mm laser cutting machine for shellFeatuer:High accuracy,swift speed,no pollution,low noise,stable ... ,alloy steelcontrolled by computer,easy to operateApplication:YAG laser cutting machine is widely applide in various kinds of metal and non ... Power Demand: 380V/50Hz/100ACooling System:Air cooling laser cutting machine for shell