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An annual output of 30,000 tons of ammonium alum, 10,000 tons of potassium alumAn annual output of 30,000 tons of ammonium alum, 10,000 tons of potassium alum |
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An annual output of 30,000 tons of ammonium alum, 10,000 tons of potassium alumAn annual output of 30,000 tons of ammonium alum, 10,000 tons of potassium alum |
