Retorts, Crucibles, Mufflers, Nozzles, Plugs, Supports, Cupels, Tubes, Pipes, Sheaths, Rods And Other Refractory Ceramic Goods (excl. Those Of Siliceous Fossil Meals Or Similar Siliceous Earths, Those Of Heading 6902, Containing > 50% Carbon Or Containing > 50% By Weight Of Alumina [al203] Or A Mixture Or Compound Of Alumina And Silica [sio2])
Retorts, Crucibles, Mufflers, Nozzles, Plugs, Supports, Cupels, Tubes, Pipes, Sheaths, Rods And Other Refractory Ceramic Goods