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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Face-to-face, centre-to-face, end-to-end and centre-to end dimensions of valves--Mals screw valves
WITHDRAWN published on 29.8.1994
Selected format:Method for determination of copper content in manganese ores--Polarographic method
WITHDRAWN published on 28.2.1979
Selected format:Technical specifications to determinate the suitable areas for environmental noise of urban area
WITHDRAWN published on 8.9.1994
Selected format:Trade data elements directory—Standard data elements
WITHDRAWN published on 26.5.1997
Selected format:Graphical symbols for textile machinery
WITHDRAWN published on 8.9.1994
Selected format:Procedures for toxicological assessment on food safety
WITHDRAWN published on 10.8.1994
Selected format:Procedures for toxicological assessment of food
WITHDRAWN published on 24.9.2003
Selected format:Unscheduled DNA synthesis test
WITHDRAWN published on 10.8.1994
Selected format:Unscheduled DNA synthesis test
WITHDRAWN published on 24.9.2003
Selected format:Sex-linked recessive lethal test
WITHDRAWN published on 10.8.1994
Selected format:Latest update: 2024-10-18 (Number of items: 2 205 605)
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