Widely used are high refractive index glass beads containing TIOZ and BaO. It is produced by passing a glass powder of a certain particle size through a high temperature air to remelt them, and then forming the beads by surface tension. The molten glass can also be atomized into beads by high pressure air or high temperature gas.

1.High refractive index glass micro: beads are mainly used in the manufacture of engineering grade reflective film for traffic management signs. It requires glass beads to have a particle size range of 37 to 90. In addition, since the light propagates back and forth in the glass beads, it is required that the light absorption of the bead glass is as small as possible and the transparency is high.

2.quasi-high refractive index glass beads: refractive index of 1.9 to 2.0. The glass composition and production method are similar to those of high refractive index glass beads, but the TIOZ content in the glass component is reduced, while the BaO and 5102 contents are increased. Quasi-high refractive index glass beads having a refractive index of 1.9 are mainly used for the production of high-strength reflective films. These reflective films have high reflective intensity and are often used as traffic signs for highways and marine life-saving signs. They are also used to make reflective fabrics such as reflective fabrics and reflective tapes. Among them, Glass ball with large particle size can be used as area lines for airport landing runways and navigation runways.