... as Zirconia Ceramic, Silicon nitride Ceramic, Alumina Ceramic, etc.The quality system has passed SGS ISO9001:2008, and ISO 14001:2004.JINGANG structure ceramic includes Al2O3 ... ,3. corrosion resistance4. oxidation resistance JINGANG structure ceramic includes Al2O3, ZrO2,SiC, Si3N4 material .Specification Zirconia ceramic are applicated as shaft bearing ,plunger ...