| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| NB/T 11239-2023 | English | 229 |
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Days<=3
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(Technical specifications for diversion heat collectors for low ambient temperature air source heat pumps)
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NB/T 11239-2023
| Valid |
NB/T 11239-2023
|