Guizhou Provincial Standard of the People's Republic of China
Scope
This standard stipulates the maintenance cycles, operation requirements and quality assurance of automobiles at all levels. This standard applies to automobile maintenance companies and transportation owners.
DB52/T 422-1999 Referenced Document
GB 14761.5-1993 Emission standard for pollutants at idle speed from vehicle with petrol engine
GB 14761.6-1993 Emission standard for smoke at free acceleration from vehicle with diesel engine
GB 7258-1997 Safety specifications for motor vehicles operating on roads
GB 7454-1987 Technical regulations for operation and beam adjustment of motor vehicle head-lamp
GB/T 5624-1985 Terms of motor vehicle maintenance and repair