36x38mm Nano Engraving PET Trasmission Diffraction Grating Ultra Precision
![36x38mm Nano Engraving PET Trasmission Diffraction Grating Ultra Precision](http://ae04.alicdn.com/kf/Hbbc2d994fe1e4301a76e25dfcd89e1f0m.jpg)
sku: 1005001713360600
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$5.47
Shipping from: China
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