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Photochromism Gray Bifocal Reading Glasses +1.75 Lightweight TR90 Frame Transition Readers Eyeglasses
Product ID : 45686242
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Galleon Product ID
45686242
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About Photochromism Gray Bifocal Reading Glasses +1.75
Transition photochromic gray bifocal reading glasses lens optical glass containing silver halide microcrystals, Phototropy reversible reaction according to the principle, In the sunlight and UV irradiation variable dark, Completely absorb ultraviolet and visible light absorption of neutral，Back to the dark, Can restore the colorless transparent.
