... , Si3N4 material . These advanced ceramic are applicated in sealing material , mechanical system, firing equipment and refreactory.We can machinging ceramic rods, ceramic plunger, ceramic ring, ceramic ... . corrosion resistance4. oxidation resistance JINGANG structure ceramic includes Al2O3, ZrO2,SiC, Si3N4 material .Specification Zirconia ceramic are applicated as shaft bearing ,plunger,sealing ...