HBN-A: Medium crystallization, excellent high temperature and oxidation resistance, small original particle size and large agglomerate size. Because the particles are spherical, they are especially suitable as fillers, casting and injection molding release agents and composite ceramics, and are also easy to hot press.To reach or close to the advanced level of similar foreign products, it can replace imports. Main raw materials for preparing special composite ceramics, such as evaporation boat for aluminum plating; raw materials for hot-pressed boron nitride products; lubricating coating additives; metal surface treatment addition; used for preparing cubic boron nitride; demoulding in casting molding and injection molding agents, etc.