Explanatory notes
… 4504.10 ‑ Blocks, plates, sheets and strip; tiles of any shape; solid cylinders, including discs 4504.90 ‑ Other … impregnated (e.g., with oil), or reinforced by backing with paper or cloth provided it does not have the character of … materials such as panels, blocks and tiles, and as moulded shapes (cylinders, shells, etc.), for insulating or …