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GB 50497-2019

Chinese Standard: 'GB 50497-2019'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
GB 50497-2019English2179 Add to Cart Days<=11 Technical code for monitoring of building excavation engineering GB 50497-2019 Valid GB 50497-2019

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