henan ruishi special refractory co., ltd. is established according to the modern management in 1993. as one of the main manufacturers and exporters for abrasive, refractory materials and metallurgy industry in china. we have six plants (two fused plant ,three processing factories, one special refractory material plant,one metallurgy material plant,one acid washing and water washing plant, and sales department ).we can produce 80,000 tons annually. our products include brown fused alumina95%, brown fused alumina98%,white fused alumina, black fused alumina, compact fused alumina, semi-friable fused alumina, micro crystalline fused alumina, calcium aluminate etc. we have passed iso9001-2000 quality management system certificate. white fused alumina is electrically fused in arc furnace with high grade bayer's process alumina as raw material. it has higher hardness and slight lower toughness comparing with brown fused alumina. it is also characterized by its high purity, ability of self-sharpening, better cutting, less heat emit, higher efficiency, acid and alkali resistance, good thermal stability. abrasives tools made of it are suitable for grinding high-speed, high carbon steel, etc. it also can be used as materials for grinding and polishing, precision casting, spraying and coating, medium body for chemical industry, special ceramics and high-grade refractory materials, etc. purpose specification chemical composition(%) al203 nao cao f12-f80 99.0min 0.5max 0.4max for abrasive f90-f150 98.5min 0.6max 0.4max f180-f240 98.2min 0.7max 0.4max for abrasive w1-w63 97.5min 0.8max 0.5 max 0-1mm 99.0min 0.5max 0.4max 1-3mm 99.0min 0.5max 0.4max for refractory 3-5mm 99.0min 0.5max 0.4max 5-8mm 99.0min 0.5max 0.4max 8-12mm 99.0min 0.5max 0.4max for refractory 0-180mesh 98.5min 0.5max 0.4max 0-220mesh 98.5min 0.5max 0.4max 0-320mesh 98.5min 0.5max 0.4max if you have any requirement, please don't hesitate to inform us. duzude521@rs-abrasive.com. hope we can establish stalbe long terms business relationship with each other. sales manager: du zu de tel:86-379-65286183 mobile phone:13383884596 fax:86-379-65285889 http://www.ycrs.com.cn