Silicon Nitride,Si3N4 Si3N4 is a new material made out under special high temperature and pressure, it is widely used for refractory and ceramics material, it also has high efficiency in grinding processing. Chemical Composition and other feature: product A Si3N4 97.5% Si 58.00% Fe 1.50% N 34.00% Color white Refractory deree 1700'C product B Si3N4 75.00% Si 49.00% Fe 15.00% N 28.00% Color gray Refractory deree 1700'C If you are interested in the above products, pls keep us advised, we will provide more details for your reference. Thanks & Best Regards. C A E C, Sales Division LI LIN (Mr.) TEL:+86 371 67668728 FAX:+86 371 67625837 BIZ.E-MAIL: MSN: