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YD 254-1981

Chinese Standard: 'YD 254-1981'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
YD 254-1981English199 Add to Cart Days<=2 (Ground rods) YD 254-1981 Obsolete YD 254-1981

  Google-Books (Full-PDF, without digital protection, will be auto-delivered in 0~10 mins):   GB 6830-1986  YD/T 2583.18-2019  YD/T 1118.3-2018