... than 50 years history, is specialize in studying and producing advanced ceramic, such as Zirconia Ceramic, Silicon ... in sealing material , mechanical system, firing equipment and refreactory.We can machinging ceramic rods, ceramic plunger, ... shaft bearing ,plunger,sealing matetial and knife, with high density, hardess ,bending strength and breaking tenacity.Zirconia ceramics propertiesDensityg ...