Silicon Nitride bonded Silicon Carbide(Si3N4-SiC )has good characteristics of particular resistance, such as high temperature(up to 1700C), high strength, high hardness, also excellent corrosion resistance and abrasion resistance. Zhengzhou Brother Furnace Co., LTD has developed considerable efforts to make innovation of technology and management, and have successfully developed various kinds of Si3N4-SiC products which are applicabe to wheel foundry in low pressure die-casting, desulfurizing nozzle, slurry pump industry, non-ferreous industry etc.