D20 F150 CT3.0 mm Focusing Lens (Laser Welding)
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WR-20.5 Safety Glass O-ring 20.5x16x2.5 mm
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Protective glass D20mm*2mm
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WRM-22 Reflective lens (mirror) 22.5*17*2.9 mm (laser welding)
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D20 F50 CT3.5 mm collimator lens (laser welding)
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