| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB 21522-2008 | English | 169 |
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Days<=3
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Emission Standard of Coalbed Methane/Coal Mine Gas (on trial)
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GB 21522-2008
| Valid |
GB 21522-2008
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