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4. Noise Reduction The insulating properties of tempered glass units contribute to effective noise reduction. The air or gas space between the panes acts as a barrier, minimizing outside noise and enhancing the overall comfort of indoor environments. This aspect is especially valuable in urban settings where noise pollution can be a significant concern.

(8) With hair inspection: Put the crystal on a hair, the human eye can see the double shadow of the hair through the crystal, it is natural crystal, mainly because the crystal has birefringence.