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½Ä÷¿ë, ³×´ú¶õµå»ê, 25kg Content: >99%, Arsenic: <4ppm, Lead: <5ppm, Selenium: <30ppm, Loss on Drying: <1%, Residue on Ignition: <0.25%
°ø¾÷¿ë, Çѱ¹»ê, 25kg Purity: >98%, Total-N: >21%, Free H2SO4: <0.05%, Sulfamic acid: <0.01%, H2O: <0.1%

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