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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
Plastics—Methods of exposure to laboratory light sources—Part 2:Xenon—arc sources
WITHDRAWN published on 16.9.1999
Selected format:Plastics—Methods of exposure to laboratory light sources—Part 2:Xenon-arc sources
WITHDRAWN published on 8.7.2014
Selected format:Plastics—Methods of exposure to laboratory light sources—Part 3:Fluorescent UV lamps
WITHDRAWN published on 9.9.1997
Selected format:Plastics—Methods of exposure to laboratory light sources—Part 3:Fluorescent UV lamps
WITHDRAWN published on 8.7.2014
Selected format:Plastics—Methods of exposure to laboratory light sources—Part 4:Open flame carbon arc lamp
WITHDRAWN published on 14.6.1996
Selected format:Plastics—Methods of exposure to laboratory light sources—Part 4:Open-flame carbon-arc lamps
WITHDRAWN published on 8.7.2014
Selected format:Safety regulations for metal and nonmetal opencast mines
WITHDRAWN published on 14.6.1996
Selected format:Safety regulations for metal and nonmetal mines
WITHDRAWN published on 22.6.2006
Selected format:Safety regulations for metal and nonmetal underground mines
WITHDRAWN published on 14.6.1996
Selected format:Determination for minimum explosive concentration of dust cloud
WITHDRAWN published on 4.6.1996
Selected format:Latest update: 2026-04-06 (Number of items: 2 271 069)
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