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| Chinese National Standard List: Ferrous metal ore in general |
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GB/T 24232-2009 Manganese and chromium ores—Experimental methods for checking the bias of sampling and sample preparation
Issued on: 2009-7-15 Price(USD): 160.0 |
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GB/T 24233-2009 Manganese and chromium ores—Experimental methods for evaluation of quality variation and methods for checking the precision of sampling
Issued on: 2009-7-15 Price(USD): 210.0 |
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KA/T 1047-2007 The direct measuring method of the coal seam gas pressure in mine
Issued on: 2007-03-30 Price(USD): |
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