We as a leading supplier of halo phosphor powder, including halo phosphor powder, stem & filament for halo lamp. We has enough experience for the area of lighting.We can adjust the powder quality and standard as per your requirement.Meantime, we are offering all kind of promotional products ,welcome to send us inquiry.Quality is first and we believe in our best service and keep long term business relation with our customers.Pls. feel free to contact us for more details.