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Purity: 4N-6N<br> Used in photographic exposure agents, metallurgical additives, as catalysts in the isomerization of petroleum products, and pigments in plastics, paints, enamels, glass, etc.; <br> Used in glass colorants, lead-acid batteries, selenium dioxide, etc.
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Purity: 4N-6N<br> Black gray powder <br> -100 mesh; -200 mesh <br> Mainly used in the production of selenium dioxide as a catalyst for manganese electrolysis, and also used in rectifiers, photographic exposure agents, petrochemical work catalysts, photocopy toner cartridges, selenium photosensitive plates, alloys, etc.
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