Desktop Marking Machine 20W 30W for Stainless Steel Metal Engraving Moudel Number LZ-20FM LZ-30FM Laser Source Max-20X Max-30X Laser Beam Quality M² ≤1.4 Pulse Repetition Rate 27-60kHz Laser Wavelength 1064nm Power Supply 500W / 220V / 50Hz(110V) Marking Range 110mm/150mm Marking Depth ≤1mm Marking Speed ≤10000mm/s Repeated Accuracy ±0.002 Min. Marking Width 0.1mm Cooling Method Air Cooling Dimensions 460*300*683 mm Packing Size 550*440*690 mm Weight 25kg