Explanatory notes
… of beryllium oxyfluoride (manufactured from the ore) and barium or other fluorides. A graphite crucible is used as … metal (in blocks, pellets, cubes, etc.), products (bars, rods, wire, sheets, etc.), and articles. Goods made up … in accordance with Note 5 to Section XV. Certain chromium base alloys are used in jet engines, protective tubes for …