Boron nitride crystal belongs to the hexagonal crystal system, with a structure similar to graphite and many similarities in performance, so it is also called "white graphite". It has good heat resistance, thermal stability, thermal conductivity, and high-temperature dielectric strength, making it an ideal heat dissipation material and high-temperature insulation material. Boron nitride has good chemical stability and can resist corrosion from most molten metals. It also has good self-lubricating properties. Boron nitride products have low hardness and can be machined with an accuracy of 1/100mm.