One. Scientific Foundations of Hollow Glass Microspheres one.one Composition and Microstructure 1.one.one Chemical Composition: Borosilicate Dominance Hollow glass microspheres (HGMs) are principally composed of borosilicate glass, a fabric renowned for its reduced thermal growth coefficient and chemical inertness. The chemical makeup generally contains silica (SiO₂, fifty-ninety%), a... https://community.wongcw.com/posts/1164875