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GB/T 31253-2014

Chinese Standard: 'GB/T 31253-2014'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
GB/T 31253-2014English399 Add to Cart Days<=3 Natural gas -- Validation for gaseous reference materials -- Direct measurement of calorific value and density GB/T 31253-2014 Valid GB/T 31253-2014

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