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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
General technical specifications of vacuum packaging machine and vacuum-gas flushing packaging machine
WITHDRAWN published on 19.5.1988
Selected format:Picture sizes for still cameras
WITHDRAWN published on 1.1.1988
Selected format:Classification and code for road vehicles--Motor vehicle
WITHDRAWN published on 27.3.1989
Selected format:Classification and code for road vehicles--Non-motor vehicle
WITHDRAWN published on 27.3.1989
Selected format:Tripod connections for cameras
WITHDRAWN published on 1.1.1988
Selected format:Shutter cable release tip and socket for cameras
WITHDRAWN published on 1.1.1988
Selected format:Camera accessory shoes and feet
WITHDRAWN published on 1.1.1988
Selected format:Front lens barrels up to 100mm--Dimensions important to the connection of auxiliaries
WITHDRAWN published on 1.1.1988
Selected format:Small flash connections for hand-held cameras--Dimensions
WITHDRAWN published on 1.1.1988
Selected format:Specification for 135-size film magazines
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2026-03-15 (Number of items: 2 266 660)
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