... 95% AL2O3 2. Insulation 3. Wear-resisting 4. Corrosion resistance 5. Precision polishing Alumina ceramic is ... ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, ... and other products. We can make the part by hot injection pressing, dry pressing, isostatic ... as per customer request. High quality high temperature ceramic lampholder