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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
Performance of the fourth order digital multiplex equipment operating at 139 264kbit/s and using positive justification
WITHDRAWN published on 1.1.1989
Selected format:Test methods of the fourth order digital multiplex equipment operating at 139 264kbit/s and using positive justification
WITHDRAWN published on 1.1.1989
Selected format:High frequency rural telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--General
WITHDRAWN published on 31.3.1989
Selected format:High frequency rural telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--Unfilled cables with copper conductors
WITHDRAWN published on 31.3.1989
Selected format:High frequency rural telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--Unfilled cables with aluminium conductors
WITHDRAWN published on 31.3.1989
Selected format:High frequency rural telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--Filled cables with copper conductors
WITHDRAWN published on 31.3.1989
Selected format:High frequency rueal telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--Filled cables with aluminium conductors
WITHDRAWN published on 31.3.1989
Selected format:High frequency rural telecommunication cables with polyolefin insulation and laminated aluminium polyolefin sheath--Cables with integral suspension strand
WITHDRAWN published on 31.3.1989
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WITHDRAWN published on 1.1.1989
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WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2025-12-28 (Number of items: 2 253 436)
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