| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| HJ 1287-2023 | English | 209 |
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Days<=3
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Stationary source emission - Determination of blackness of smoke plumes - Ringelmann smoke telescope
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HJ 1287-2023
| Valid |
HJ 1287-2023
|