1.alumina beads for ceramic pad heater 2.95% 3.excellent thermal conductivity 4.Pink, white 5.ISO,SGS ... Alumina Ceramic Heating Beads(92%,95%,99%) Properties: Higher density, surface finish and unifomity than heat ... . Specification: Title95% alumina lead porcelain beadNotes Marerial Al2O3 (alumina)contain 95.27% ColorRed Density3.6 g/cm3 Flexural strength300 Mpa Compressive ...