It is used for infrared, ultraviolet and filter areas, such as infrared windows, telemetry, surveillance, gas detection, military aviation and aerospace.
It is used for high temperature, corrosion resistance and wear resistance, such as high temperature furnace observation window, corrosion liquid observation window, sapphire lens, etc.
Counter windows, epitaxial substrates, various substrates, directional substrates, and circuit substrates.
It is also used in medical endoscopy and medical cosmetology.