Grey or white refractive powder and highlight refractive powder

Refractive powder is a kind of powder which can reflect light.It is mainly made of glass beads,and they are white and grey in color.
It can be the important raw and processed materials of Reflective fabric, Reflective tape, Refletive webbing, Reflective Heat-transfer film, Safety vest and other new optical functional composites.
It is better to primer the surface first,and then spray the refractive powder on it so that it could get better reflective effect.