产品描述
,SILICEOUS FOSSIL MEALS (FOR EXAMPLE, KIESELGUHR, TRIPOLITE AND DIATOMITE) AND SIMILAR SILICEOUS EARTHS, WHETHER OR NOT CALCINED, OF AN APPARENT SPECIFIC GRAVITY OF 1 OR LESS.
产品描述
,DISPERSIONS (CONTAINING RADIOACTIVE ELEMENTS, ISOTOPES OR COMPOUND),OTHER,RADIOACTIVE ELEMENTS,RADIOACTIVE ELEMENTS AND ISOTOPES AND COMPOUNDS OTHER THAN THOSE OF SUBHEADING 2844.10, 2844.20 OR 2844.30 ALLOYS, DISPERSIONS (INCLUDING CERMETS), CERAMIC PRODUCTS AND MIXTURES CONTAINING THESE ELEMENTS, ISOTOPES OR COMPOUNDS RADIOACTIVE RESIDU,RADIOACTIVE ISOTOPES