Q:what is the difference of Pyrolytic Boron Nitride (PBN)&Hot Pressed Boron Nitride Ring (BN Ring)?
A:As they are made with different methods, they have different chemcial and mechanical properties. Pyrolytic boron nitride (PBN) has a much better purity level of ≥99.99%， higher strength, better insulation and better structure.
