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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
Stabilized d.c power supply for nuclear radiation detectors
Standard published on 2.7.2008
Selected format:Environmental conditions and test procedures for nuclear radiation detectors
Standard published on 2.3.2006
Selected format:Thermoluminescence dosimetry systems for personal and environmental monitoring
Standard published on 3.9.2014
Selected format:Specification for nuclear grade sinterable uranium dioxide powder
Standard published on 19.6.2008
Selected format:Specification for sintered uranium dioxide pellets
Standard published on 19.6.2008
Selected format:Method for analysis of calcium metal--The determination of chlorine content by chloride--Selective electrode
Standard published on 30.12.1988
Selected format:Methods for analysis of calcium metal—Part 1:Determination of chlorine by chloride selective electorode method
Standard published on 1.8.2025
Selected format:Method for analysis of calcium metal--The determination of micro-amounts of silicon by photometric method
Standard published on 30.12.1988
Selected format:Methods for analysis of calcium metal—Part 2Determination of micro-amounts of silicon by spectrophotometry
Standard published on 1.8.2025
Selected format:Method for analysis of calcium metal - Part 3: Direct determination of ironnickelcoppermanganese and magnesium in calcium metal by atomic absorptiom spectrophotometry
Standard published on 2.7.2008
Selected format:Latest update: 2026-03-13 (Number of items: 2 266 261)
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