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SY 4207-2007

Chinese Standard: 'SY 4207-2007'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
SY 4207-2007EnglishRFQ ASK Days<=3 Code for quality acceptance of oil and gas construction engineering Pipeline crossing and aerial crossing engineering SY 4207-2007 Valid SY 4207-2007

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