Park, Liando U Valley, Changchun City,
Jilin Province, China
Borosilicate 3.3 Windows
Borosilicate 3.3 (PZ33) is the alternative for borofloat 33(BF33).The content of borosilicate : boron: 12.5 ~ 13.5%, silicon: 78 ~ 80%. Therefore, this kind of glass is called high borosilicate glass.