How long is the life of tempered glass?

Physical tempering is to heat and quench the glass, changing the structure between the molecules and molecules inside the glass; chemical tempering is to ion exchange the molecular structure of the glass surface at high temperature; both methods are permanent changes to the glass material. Micro structure. Therefore, unless there is high temperature and strong chemical action, the characteristics of the tempering will not attenuate or change with time under normal use.

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