Yujing fully tempered glass 4 - 5 times stronger than annealed glass of equal thickness.
All work done on glass ( beveling,cutting,bening,ect ) must be done before tempering.
Tempered glass is one kind of high - strengh glass with even compressive stress on the srface hich is made by heaating float
glass to nearly softening point and then cooling it down rapidly by air.