Product name: parts for graphite gear box in vacuum furnace under high temperature series name: this product belongs to the series for application of processing by industrial furnace under high temperature. Main purpose of this series: it is mainly used as heat temperature element and heating assembly for producing vacuum and various industrial furnace. Its function is thermal conductivity and heat insulation. Speciality of raw material: high density, high temperature resistance, good oxidation resistance and thermal shock resistance, good performance of electrical conductivity, high mechanical strength.