Due to its excellent mold release and high temperature stability, ABM boron nitride is widely used in the casting process of round bars, slabs, aluminum foil, wire rods and other production processes. It can be painted on the surface of the launder, degassing box, filter box, casting table lining, adapter plate, casting nozzle and other materials in contact with molten metal to protect the mold, resist corrosion, and prolong the service life of refractory materials. Prevent the fine impurities from penetrating into the aluminum liquid and cause secondary pollution, greatly improving the product quality.