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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
Feed processing equipment - Terms
Standard published on 31.12.2012
Selected format:Acoustics--Determination of sound absorption coefficient and impedance in impedance tubes--Part 1:Method using standing wave ratio
Standard published on 13.5.2004
Selected format:Acoustics--Determination of sound absorption coefficient and impedance in impedance tubes--Part 2:Transfer function method
Standard published on 26.3.2002
Selected format:Acoustics--Measurement of noise inside motor vehicles
Standard published on 26.3.2002
Selected format:Acoustics--Declared noiseemission values of information technology and telecommunications equipment
Standard published on 26.3.2002
Selected format:Acoustics--Determination of sound insulation performances of enclosures--Part 1:Measurements under laboratory conditions (for declaration purposes)
Standard published on 26.3.2002
Selected format:Acoustics--Determination of sound insulation performances of enclosures--Part 2:Measurements in situ (for acceptance and verification purposes)
Standard published on 26.3.2002
Selected format:Connectivity for lighting systems
Standard published on 2.7.2026
Selected format:Phosphate rock and concentrate--Determination of moisture content--Gravimetric method
Standard published on 20.12.1995
Selected format:Telecontrol equipment and systems--Part 6:Telecontrol protocolscompatible with ISO standards and ITU-T recommendations--Section 503:TASE.2 Service and protocol
Standard published on 26.3.2002
Selected format:Latest update: 2026-09-11 (Number of items: 2 300 165)
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