Introduction of crystal glasses case

Crystal glasses case expensive, but after wearing feel very cool, some people think it has a role in raising purposes. This is no scientific basis for Crystal glasses are the first to be used for the production should be at that time could not manufacture of optical glass, no better than the crystal optical material after light has been scientifically proved that occur through the crystal double refraction when creating ghost, and crystal block ultraviolet and infrared effect is not great majority can go through. expensive crystal glasses because crystal geology hard brittle strong, not annihilation and Shaochun crystal production not because the eyes have a special protective effect in people wearing crystal glasses cool feeling less because of the lower temperature crystal lens for ultraviolet and infrared absorption, but does not raising projects. glasses case, raising projects.

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