Hebei Corefra Silicon Nitride Material Co., Ltd is a professional dedicated to the production of Silicon Nitride powder, Ferro Silicon Nitride, Silicon Nitride Ceramics for high-tech enterprise. Headquartered in Shijiazhuang, located in the northern industrial zone, we introducted advanced technology from UK in 1999, and become the first large-scale production of thin silicon nitride bonded silicon carbide manufacturers.