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YDJ44-1989

Chinese Standard: 'YDJ44-1989'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusRelated Standard
YDJ 44-1989English2879 Add to Cart Days<=13 Temporary Technical Specifications for Engineering Construction and Acceptance of Telecommunication Network Optical Fiber Digital Transmission System YDJ 44-1989   YDJ 44-1989

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