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30 Watt Handheld Laser Marking Machine for Metal and Nonmetal Technical parameters Laser model LZ-GX20W LZ-GX30W LZ-GX50W LZ-GX70W LZ-GX100W Average power(W) ≥20 ≥30 ≥50 ≥70 ≥100 Wavelength (nm) 1064 ...