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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
Conveyor belts of textile carcase—Test method for tensile strength and elongation
WITHDRAWN published on 2.1.1994
Selected format:Textile conveyor belts—Full thickness tensile strength,elongation at break and elongation at the reference load—Test method
WITHDRAWN published on 24.4.2009
Selected format:Test method of ferrocement panels in flexure
WITHDRAWN published on 24.5.1983
Selected format:Dentistry—Laboratory cutters—Part 2:Carbide laboratory cutters
WITHDRAWN published on 28.12.2018
Selected format:Test method of ferrocement panels in axial tension
WITHDRAWN published on 24.5.1983
Selected format:Pure pyridine
WITHDRAWN published on 1.1.1989
Selected format:a-Methylpyridine
WITHDRAWN published on 1.1.1989
Selected format:b-Picoline fraction
WITHDRAWN published on 1.1.1989
Selected format:Method of determination for pyridine and homologues contents of the crude light pyridine
WITHDRAWN published on 1.1.1983
Selected format:Method of determination for distillation range of pyridine products
WITHDRAWN published on 1.1.1983
Selected format:Latest update: 2025-12-17 (Number of items: 2 252 317)
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