laser cutting machine for shell Standard marking scope:300mm*300mm(optical) Marking depth: 3mm Min ... accuracy,swift speed,no pollution,low noise,stable functionNo contact and machanical distortion,perfect design effect,easy to cut metal, ... steel,spring steel,copper plate,aluminium plate,other metal plates and pipesTechnical Parameters:Max.Outout Power: 500WLaser Wavelength: 1064nmRepetition Frequency: ...