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CN2507
25 Salt, Sulphur, Earths and Stone, Plastering Materials, Lime and Cement
2507 (01/1988-..) Kaolin and Other Kaolinic Clays, Whether or not Calcined
25070010 (01/1988-12/1994) Kaolin and Other Kaolinic Clays, Crude
25070020 (01/1995-..) Kaolin
25070080 (01/1995-..) Kaolinic Clays (Other Than Kaolin)
25070090 (01/1988-12/1994) Kaolin and Other Kaolinic Clays, Calcined