Qingdao JinYao's glass railings/balustrades are made of tempered
glass. It is a kind of glass with high safety and strong strength.
In order to increase the strength of glass, glass factories usually
use chemical principles or physical methods to test the glass by
applying pressure on the glass surface. When the glass bears the
external force, it first offsets the surface stress, thereby
improving the bearing capacity and enhancing the glass's resistance
to wind pressure, cold and hot temperature changes, and impact
forces.