Degree of hardness of 9 hours (9h hardness degree 9 = corundum (sapphire) grinding hardness 1000 after rosiwal only the diamond is harder = 10h) Please note because this film was made of hardened real glass and was deliberately left space to the edge of the smartphone 1-2 mm. Note for models: All visibly rounded models of each smartphone manufacturer is the protective glass only on the front of the front spell, However, the warmer core continues to contract even more, since the heat expansion above the transformation point is significantly higher than below. Due to this frozen preload, the tasted glass can compensate for significantly higher tensile loads than non -treated glass. However, a workpiece treated in this way can then no longer be cut without destruction, as with untreated gl.
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