Why tempered glass used in shower enclosure

Why tempered glass used in shower enclosure,because of the advantages of tempered glass: 

Firstly, its intensity is several times higher than the ordinary glass, the flexural strength is the 3-5 times than the ordinary glass, the impact strength is 5-8 times than the ordinary glass, as to enhances the strength simultaneously also the security. 

Secondly,usage safety,and its bearing capacity increased to improve the fragile nature, even tempered glass is damaged but there is no acute angle of small fragments, then reduce the injuried possibility.

Tempered glass rapid cold or hot resistance is 2-3 times than the ordinary glass.  generally can withstand the temperature difference of more than 150LC, to prevent thermal cracking obviously.  

Even if the glass broken,those debris will break into homogeneous small particles without knife-like sharp angle, that is why such safety glass is widely used in the field of building decoration. Flat tempered, curved tempered glass consist in shower cabins,also widely used in high-rise building doors and windows, glass curtain wall, indoor partition glass, lighting ceiling, sightseeing elevator alleway, furniture, glass guardrail and so on.