Silicon Carbide, Boron Carbide, Silicon Carbide Wafer manufacturer / supplier in China, offering High Quality Polishing Abrasive Silicon Carbide 98%/97%/95%/88%/85%, B4c 325mesh/100mesh/200mesh Purity 95% Boron Carbide for Refractory, Boron Carbide F360 F400 F500 F600 B4c Powder and so on.