Retorts, crucibles, mufflers, nozzles, plugs, supports, cupels, tubes, pipes, sheaths, rods, slide gates and other refractory ceramic goods (excl. those of siliceous fossil meals or similar siliceous earths, those of heading 6902, containing > 50% by weight of free carbon or containing > 50% by weight of alumina [al203] or a mixture or compound of alumina and silica [sio2])
                    HS code
                    : 690390
                    GN code
                    : 69039000
                    Taric code
                    : 690390000080 
                
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