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½Ä÷¿ë, ¹Ì±¹»ê, 25kg Assay: >99.0%, Loss on Drying: <0.25%, Ammonia: <20ppm, Arsenic: <4ppm, Chloride: <200ppm, Heavy Metal (as Pb): <10ppm, Lead: <2ppm, cumulative retained: 75micron: >30%; 45micron: >70%

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