JJG 688-1990
Verification Regulation of Vehicle Exhaust Emission Measuring Instruments (English Version)
- Standard No.
- JJG 688-1990
- Language
- Chinese, Available in English version
- Release Date
- 1990
- Published By
- National Metrological Verification Regulations of the People's Republic of China
- Status
- 2008-02
- Replace By
- JJG 688-2007
- Latest
- JJG 688-2017
JJG 688-1990 history
- 2018 JJG 688-2017 Verification Regulations for Automobile Emission Gas Tester
- 2007 JJG 688-2007 Vehicle Exhaust Emissions Measuring Instruments
- 1990 JJG 688-1990 Verification Regulation of Vehicle Exhaust Emission Measuring Instruments
