"heat resistant glass" . . "Borosilicate glass" . "Borosilicate crown glasses" . "Technical Glass" . . "High borate borosilicate glasses" . . . . . "Borosilicate Glass" . . "alkali borosilicate glasses" . "borosilicates" . "Borosilicate crown" . . "Borosilicate" . "borosilicate" . . . . "borosilicate glass" . "Borosilicate_glass" . "high-borosilicate glass" . . "boron silicates" . . "Borosilicate glass#Trade names" . . . . "boron glasses" . "Borosilicate glass" . "Borosilicate glass 3.3" . . "Borosilicate glass#Optics" . . "alumino-borosilicate glass" . . "Duran" .