| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YDB 071.4-2011 | English | 519 |
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Days<=3
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Guide for energy saving technology of power supply and Room environment for telecommunications. Part 4: Grade of energy efficiency of Air-conditioners
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YDB 071.4-2011
| Obsolete |
YDB 071.4-2011
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