Shandong Huamao Holding Group Co., Ltd. is a leading company in China. Our group company was awarded the honorary title of "2022 Foreign Trade Import and Export Outstanding Contribution Enterprise" of Rizhao. Gansu Daoming Silicon Carbide Technology Co., Ltd. Which is a leading manufacturer of silicon carbide is one of the subsidiary companies. Black silicon carbide is produced at hight temperature in an electric resistancetype furnace with quarts sand and petroleum coke as its main raw materials. Its hardness is between fused alumina and synathetic diamond. Mechanical intensity of it is higher than fused alumina. It is brittle and sharp and has electrical and heat conductivity in some degree. The abrasives made of it are suitable for working on cast iron, non-ferrous metal, rock, leather, rubber, etc. It is also broadly used as refractory material and metallurgical additive. Special specification can be supplied on your request. If you need it, please contact me.