mrico beads , reflect beads .glass beads without hole beads,glass beads for road mark Size: 0.2-0.4mm,0.6- ... .8mm,1.0-1.2mm,2.0- SERIESopaque colours lustered glass beadsCHEMICAL COMPOSITIONQuartz sand SURFACE TREATMENT & TECHNOLOGYopaque colours lusteredSHAPE DESCRIPTIONRound holeCOLORS ... production, and also according to customers samples of mold production glass beads for road mark