High precision laser engraving machine for Jewelry good-quality laser beam strong function software scan with high ... 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: 200W/400W/500WLaser Wavelength: ...