... Large laser power; Large marking scope steel cutter for casting and molding Featuer: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: ...