... perfect. 2. High laser beam energy density,high welding speed, and for letter local welding, has no influence on beside, no ... no tool wear ,saving material, is the traditional welding letter speed 8-10 times, can ensure long time processing, and heating ... 05-4mm Pulse Frequency0-50HZ(Adjustable) Pulse SystemSingle-chip microcomputer control Water Cosumption15(L) Circulating Water Resistance>0.5MΩ-cm( ...