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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 3836.23-2017 |
Explosive atmospheres—Part 23：Group I，category EPL Ma equipment intended to remain functional in atmospheres endangered by firedamp and/or coal dust 爆炸性环境 第23部分：用于瓦斯和/或煤尘环境的I类EPL Ma级设备 |
China National Standards endangered |
 English PDF |
| GB/T 35686-2017 |
Electrical apparatus and installation in areas endangered by explosives 火炸药危险环境用电气设备及安装 |
China National Standards endangered |
English PDF |
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