Round glass(borosilicate glass for 3d printer)

It is known as "mature glass". It completely meets the international environmental protection test standard. High-temperature resistance and not easy to deform. This is not possible with ordinary glass or tempered glass Low coefficient of expansion, high softening point, and good thermal conductivity.  It does not break due to thermal expansion and contraction. It has a flat and smooth surface and also durable to use too.