High insulation, High thermal shock resistance,No shrinkage, High mechanical strength. Hight quality with competitive price Ceramic light socketMaterial: 95% Al2O3 or SteatiteFeatures: 1.High insulation, High thermal shock resistance,No shrinkage, High mechanical strength. 2.Insulationg strength:20KV/mm; Dielectric constant:7~9. 3.High quality with low price4.Raw material meet RoHS appliance5. ...