| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJG 677-1996 | English | 319 |
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Days<=3
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Verification Regulation of Interference Type Methane Measuring Device
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JJG 677-1996
| Obsolete |
JJG 677-1996
|