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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
International data transmission services and optional user facilities in public data networks and ISDNs
WITHDRAWN published on 2.8.1999
Selected format:Packet assembly/disassembly facility(PAD) in a public data network
WITHDRAWN published on 11.11.1999
Selected format:Interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) for start stop transmission services on public data networks
WITHDRAWN published on 20.8.1989
Selected format:Interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) for synchronous operation on public data networks
WITHDRAWN published on 1.1.1989
Selected format:List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) on public data networks
WITHDRAWN published on 20.8.1989
Selected format:Use on public data networks of data terminal equipment (DTE) which is designed for interfacing to synchronousV-series MODEMS
WITHDRAWN published on 20.8.1989
Selected format:Specifications for the design of automatic fire-alarming systems
WITHDRAWN published on 1.1.1988
Selected format:Oil level indicators--Push-fit round type
WITHDRAWN published on 1.1.1989
Selected format:Oil level indicators--Screwing round type
WITHDRAWN published on 1.1.1989
Selected format:Use on public data networks of data terminal equipment ( DTE ) which is designed for interfacing to asynchronous duplex V-series MODEMS
WITHDRAWN published on 20.8.1989
Selected format:Latest update: 2025-12-25 (Number of items: 2 253 105)
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