... ,Rod,Parts,The High Technology production!Product Overview:Pyrolytic boron nitride (PBN) is a special ceramic material, obtained from ... chemical vapor deposition process. The pyrolytic boron nitride deposition process, like a "snow": hexagonal boron nitride snow sheet parallel to falls, to ... the final cooling demolding made.Main features:1.Color ivory white to orange-brown, non-toxic, non-porous, easy ...