It is made of imported nano-grade hexagonal boron nitride with special formula and technology. Applied to spray or brush on the surface of launder, lining, caster tip, thimble, distribution plate, etc.., none-stick aluminum and prolong the service life. Prevent the fine impurities in refractory materials from penetrating into the aluminum melt and second pollution. Improve the aluminum melt quality.

It is a kind of white with slightly gray fine particles(φ0.85-3.15mm), composed by chlorine and fluorine salt, it is prepared by remelting and screening treatment. It has different configurations according to difference aluminum melt.