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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
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WITHDRAWN published on 31.7.2012
Selected format:Heat loss test for thermal insulation structure and evaluation methods for thermal insulation efficiency of district heating pipes
WITHDRAWN published on 31.7.2012
Selected format:Trichlorosilane for industrial use
WITHDRAWN published on 3.9.2012
Selected format:Standard of cultivation technique on shawo radish under protective measures
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Selected format:Numerical control die casting machines
WITHDRAWN published on 3.9.2012
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WITHDRAWN published on 8.6.1988
Selected format:Types and basic parameters of heat exchangers - Part 1floating heat exchangers
WITHDRAWN published on 3.9.2012
Selected format:Types and basic parameters of heat exchangers - Part 2: Fixed tube sheet heat exchangers
WITHDRAWN published on 3.9.2012
Selected format:Types and basic parameters of heat exchangers - Part 3: U-tube heat exchangers
WITHDRAWN published on 3.9.2012
Selected format:Types and basic parameters of heat exchangers - Part 4: vertical thermo-siphon reboilers
WITHDRAWN published on 3.9.2012
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