Dear sir,We are the manufacture of reflective glass bead The specification of products is as follows:1.Type AComposition:BaO-ZnO-TiO2 GLASSRefractive Index:2.21NdSpecfic Gravity :4.5+-0.1Size:20-100um(can provide by request) This type :Using for road signs and traffic safety goods and contributing to traffic safety, and high reflective sheet.2.Type BComposition:BaO-SiO2-TiO2 GLASSRefractive Index:1.93ndSpecfic Gravity :4.0Size:20-100um(can provide by request) This type :Using for open-type reflective sheets, Cloth and capsule-typereflective sheets, reflective fabric. Reflective tape, reflective yarn 3.Type CComposition: Na2O-CaO-SiO2 GLASSRefractive Index:1.52+-0.1NdSpecfic Gravity :2.50+-0.1Size:100-900um(can provide by request) We will provide above product at very competitive price and give a big margin of profit.We are exporting to USA,Japan,Korea,Turkey ETC.Waiting your early reply!