690390100000 under HS Code OTHER REFRACTORY CERAMIC GOODS (FOR EXAMPLE, RETORTS, CRUCIBLES, MUFFLES, NOZZLES, PLUGS, SUPPORTS, CUPELS, TUBES, PIPES, SHEATHS AND RODS), OTHER THAN THOSE OF SILICEOUS FOSSIL MEALS OR OF SIMILAR SILICEOUS EARTHS - OTHER: ZIRCON OR ZIRCON-MULLITE REFRACTORIES and 281511000000 under HS Code Others were the top exported HS Codes by UÇAR METAL SANAYI VETICARET LTD STI in 2021.