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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| DL/T 2525—2022 |
Technical guideline for heat supply retrofit of steam turbine with double back pressure and double rotor interchangeable circulating water {译} 汽轮机组双背压双转子互换循环水供热改造技术导则 |
China Electricity Industry
Standards retrofit |
 English PDF |
| NB/T 10590-2021 |
Technical Specification for Lightning Protection retrofit of Collecting Lines in Wind Farms in Multi-mine Areas{译} {译} 多雷区风电场集电线路防雷改造技术规范 |
China Energy Industry
Standards retrofit |
English PDF |
| JGJ/T 129-2012 |
Technical specification for energy efficiency retrofitting of existing residential buildings 既有居住建筑节能改造技术规程 |
China Building & Construction
Standards retrofit |
English PDF |
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