Most of us know tempered glass just as a protection for the cell phone screen. And it’s confusing us a lot to make choice from different types. How to make the right choice from hundreds of options? We’d better know a bit more about the tempered glass first.

Tempered Glass as a cell phone protect film beginning at the year 2012, as the developing it is becoming the most strengthen protection film of most high-end digital products now. 

1  The hardness

In general speaking the hardness of plastic film surface not more than 3H or around, the hardness of the glass is about 6H, and after tempering the glass, the hardness reaches 9H.

2 The thicknesses

Normally, the thicknesses of tempered glass are no more than 0.4mm. Currently, we can find 4 thicknesses in the market: 0.4mm, 0.33mm, 0.26mm, and 0.15 ultra thin film.I am here to remind you pay your attention please, just choice the one you need. Never wondering to that you will be cool with a thinner one. Because, most of the products written into the thicknesses 0.15mm only. 

3 AB glue

As we have mentioned in ‘Why Tempered Glass perfectly fit to the screen’ before, AB glue is a main part of tempered glass.AB glue quality is the most important for the tempered glass film, if the glue itself is not with good quality, it is will cause to edge warping, air bubbles, watermarks and other phenomena, and if the glue is too thick, then the screen will also affect the light transmission Rate and flexibility of operation.