| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJF 1881-2020 | English | 759 |
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Days<=5
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Rules of Metrology Testing for Energy Efficiency of Water-source(ground-source) Heat Pumps
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JJF 1881-2020
| Valid |
JJF 1881-2020
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