| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJF 1921-2021 | English | 529 |
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Days<=4
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Calibration Specification for GNSS Vehicle Travelling Data Recorders
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JJF 1921-2021
| Valid |
JJF 1921-2021
|