... system has passed SGS ISO9001:2008, and ISO 14001:2004.JINGANG structure ceramic includes Al2O3, ZrO2,SiC, Si3N4 material ... . These advanced ceramic are applicated in sealing material , mechanical system, firing equipment and refreactory. ... JINGANG structure ceramic includes Al2O3, ZrO2,SiC, Si3N4 material .Specification Zirconia ceramic are applicated as shaft bearing , ...