SUPVOK Silicon Carbide element is a bar or tube shaped non-metallic high-temperature electric heating element which is made of high-purity green hexagonal silicon carbide as the main raw material, processed into billets according to a certain material ratio, and then subjected to high-temperature silicification and recrystallization and finally sintered at 2200 ℃. Normal use temperature in oxidizing atmosphere can reach 1450 ℃. In continuous use, its service life can reach 2000 hours.