RBST is a professional company specialized in high-purity alumina powder and related products research and development, production, marketing, and technical support services. The production process compared with other traditional production process has a purification process control, low cost, large production capacity, stable quality, environmentally friendly. Our products features with controlled high purity, one-time fine particles (less than 0.5um), good activity, high alpha switch , size distribution and other characteristics; powder particle morphology is similar to the spherical, no sulfur-containing ,indicators of stability. Our products are widely used as raw materials in many areas, such as three color phosphor, electronic materials, thermal insulation, LED sapphire, high pr