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Professional Standard Category: Professional Standard - Energy |
Category No.: | NB | Valid Status: | superseded |
Issued Organization: | National Energy Administration | Issued Date: | 2010-08-27 |
Implemented Date: | 2010-12-15 | Abolished Date: | |
Superseded Standard.: | NB/T 47012-2020 Pressure vessels for refrigerant device |
Superseded Date: | 2021-2-1 |
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