High borosilicate monolithic fireproof glass is made of high borosilicate float glass and tempered. China's fireproof performance comes from its very low thermal expansion coefficient, which is only 4×10-6(20-300℃), which is 2-3 times lower than ordinary glass (silicate glass). High borosilicate monolithic fireproof glass also has the characteristics of high softening point, excellent thermal shock resistance and viscosity. Therefore, when a fire breaks out, the high borosilicate monolithic fireproof glass is not easy to expand and break, which is a kind of monolithic fireproof glass with high stability, and its fireproof time limit can be as high as 3 hours. Shandong Yaohua chose high boron silicon 4.0 from Fengyang Kaisheng Company as the substrate, which was tempered by a special tempering furnace to form fireproof glass. High borosilicate fireproof glass belongs to Class C fireproof glass.