One thing I forgot to mention. I manage to broke one of my test glasses just to see the result, and it broked like a regular glass (big fractions). I contacted my manufacturer, to ask what is happening, and he calmed me down. He said because the glass is 2mm thick, its almost impossible to heat temper the glass, so they used chemical tempering. Chemical tempering is as riggid and strong as heat tempering, also more clear/ "seethrough", but if it brokes, its sharp like regular glass. But I think nobody will brake it.