Bauxite, Brown Fused Alumina, White Fused Alumina manufacturer / supplier in China, offering White Aluminum Oxide /White Fused Alumina/Wa/Wfa F220-W40 for PCB Drilling, High Temperature Resistance of Sintered Mullite 60, White Aluminum Oxide /White Fused Alumina/Wa/Wfa W14-W3 Grinding Semiconductor Wafers. and so on.