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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
Information processing - File structure and labeling of magnetic tapes for information interchange
Standard published on 18.6.2008
Selected format:Semiconductor devices--Discrete devices--Part 7:Bipolar transistors--Section Four:Blank detail specification for case-rated bipolartransistors for high-frequency amplification
Standard published on 17.11.1998
Selected format:Discrete semiconductor devices—Blank detail specification for high power bipolar transistors
Standard published on 31.3.2026
Selected format:Blank detail specification for case-rated bipolar transistors for low-frequency amplification
Standard published on 9.7.1996
Selected format:Dimensions of outlines for semiconductor discrete devices
Standard published on 27.3.1987
Selected format:Dimensions of outlines for discrete semiconductor devices
Standard published on 31.3.2026
Selected format:Acoustics—Statistical distribution of hearing thresholds related to age and gender
Standard published on 1.8.2025
Selected format:Acoustics--Pure tone air conductionthreshold audio-metry--For hearing conservation purposes
Standard published on 27.3.1987
Selected format:Acoustics—Hearing protectors—Part 1: Subjective method for the measurement of sound attenuation
Standard published on 27.2.2026
Selected format:Acoustics—Hearing protectors—Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn
Standard published on 27.2.2026
Selected format:Latest update: 2026-10-13 (Number of items: 2 304 853)
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