Composition of glass beads

1. Chemical composition: SiO2 >67%, CaO>8.0% MgO>2.5% Na2O<14%, Al2O3 0.5-2.0 Fe2O3 >0.15 Other 2.0%

2. Specific gravity: 2.4-2.6 g/cm3

Appearance: smooth, round, transparent glass without impurities

Rounding rate: ≥85% or more

3. The magnetic particles do not exceed 0.1% of the weight of the product.

4, the glass bead body bubble content is less than 10%

5, does not contain any silicone resin ingredients