Refractory Bricks ISO 9001:2000 Certificate AL2O3:38%~85% Bulk Density:0.5~2.76g/cm3 Application:Steel,Metallurgy,Cement,et Refractory Bricks For High Temperature KilnsZibo Shunzhou Refractory Co., ltd is a specialized manufacturer and supplier of refractory, we can supply many kinds of refractory products, such as high alumina bricks, fireclay bricks, low porosity fireclay bricks, insulating ...