We can supply glass beads for road marking (160-850μm)and large glass bead for rainy night(1mm-4mm),refractive rate:1.93-2.20, Roundness :75%-95%,and our products have passed CE, ISO9001 and ISO14001 certifications,with an annual output of 5,0000ton.Application in blasting media and grinding.We will offer a competitive price for you if we can meet your needs.