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heat strengthened glass
Heat strengthened glass adopt the similar process as tempered glass, but the cooling course is longer than tempered glass. So the compressive stress is not so big like tempered glass and the flatness is more perfect.
Safety performance: Not easy to breakage, and could remain in frame when breakage.
Strength performance: Twice than ordinary glass
Heat stability performance: Could resist heat effectively, and avoid heat breakage
Standard: EN1863-1; ASTMC 1048-976