Raycus 20W Fiber Laser Marking Machine Engraving Metal Ring Jewelry Steel Gold

20W/30W/50W/60W Raycus /MAX/JPT (optional). 20w choose 70mm 70mm, 110mm 110mm,200mm 200mm. Smaller Lens more precise marking. 1 Pcs U Disk (USB). Frequency of pulse. 2 Pieces Filed lens (Optional). Laser power.

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