... Best Sales Services:96-99% Ceramic Electrical Alumina Plate Heatsink Substrate Metallized With Gold,Silver,Copper,Ni,Mn Etc.For Electronic Applications! ... ,hybrid IC,semiconductor package,chip resistor and other electronic industry fields.Technical Data: ItemsUnit95% Al2O399.5% Al2O3Densityg/cm33 ... .35.4-8.3 Our Products Serials: Ceramic 96-99% Al2O3 Alumina Electronic Plate High Heat Conductivity