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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 3836.4-2021 |
Explosive atmospheres—Part 4：Equipment protection by intrinsic safety“i” 爆炸性环境 第4部分：由本质安全型“i”保护的设备 |
China National Standards “i” |
 English PDF |
| GB 3836.4-2010 |
Explosive atmospheres - Part 4: Equipment protection by intrinisic safety “i” 爆炸性环境 第4部分：由本质安全型“i”保护的设备 |
China National Standards “i” |
English PDF |
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