Sapphire wafer, Sapphire substrate ▶ Characteristic: - Stability in low & high temperature(melting point : 2400°C) - Superior mechanical properties(Extreme hardness) - High thermal conductivity - High transmittance of light ▶ Application: - Optical component : Optical flats, window, filter, prisms, aperture,covers for electric cells, laser rods, ect - Sapphire substrate ..