... rang: 20-105um(can be provided by reques 1.93nd Glass BeadTechnical data sheetCompositionTiO2-BaO-SiO2Refractive Index1.93+-0.01ndSize range20 ... 1.93nd glass bead is used for reflective sheet,heat transfer film, reflective fabric. reflective tape, reflective yarn ,reflective ink,reflective paint glass bead for reflective fabric ...