Generally, the
hardness of common cell phone screen protectors is not less than 3H and
the hardness of glass protectors is 6H, while the tempered glasses is up
to 9H.
The tempered
glass is an American newly-released cell phone screen protector in 2012.
Up to now, it has been the best and high-end screen protector.
Although the
thickness is only 0.4mm, it can fully cover cell phone screen and
protect the screen from being damaged. Its shock absorption is 5 times
than that of PET protector. On the base of this, the newly released anti
blue-ray tempered glass is not only protect cell phone screen, but also
protect eyes from the cell phone blue ray.
The raw material for tempered glass: AB glue
What exactly is
AB glue? Tempered glass is not like the common screen protector. It
cannot attach to cell phone screen through static electricity. It will
use a kind of thin flexible double-sided adhesive which called AB glue
to attach to the screen.
AB glue is also
called 2-component epoxy adhesive, one is basic glue and the other is
hardening agent. The glue can be hardened in common temperature only by
mixing these 2 components.
The thickness of the tempered glass
In the current
market, it is available to find these four thicknesses of tempered
glasses: 0.4mm、0.33mm、0.2mm、0.15mm. But these are only the thicknesses
of the glass raw materials. Plus AB blue the tempered glass is at least
0.235 mm. So keep in mind that the mark in the current market for a
tempered glass is only the thickness of the raw material.
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