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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 guide of transmission electron microscope (TEM)- X-ray energy dispersive spectrometry(EDS) quantitative microanalysis for thin biological specimens
Standard published on 16.6.2008
Selected format:Cranes--Information to be provided--Part 1:General
Standard published on 19.11.2002
Selected format:Cranes—Information to be provided—Part 3:Tower cranes
Standard published on 28.12.2018
Selected format:Cranes - Information to be provided - Part 4: Jib cranes
Standard published on 24.4.2009
Selected format:Cranes—Information to be provided—Part 5:Bridge and gantry cranes
Standard published on 28.1.2026
Selected format:Cranes--Spare parts manual
Standard published on 19.11.2002
Selected format:Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis—Part 1: Determining the inclusion or second-phase constituent content of steels and other metals by automatic image analysis and stereology
Standard published on 23.8.2024
Selected format:Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis—Part 2: Determining the inclusion ratings of steels by automatic image analysis and stereology
Standard published on 23.8.2024
Selected format:Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis - Part 3: Determining the carbides rating in steels by automatic image analysis and stereology
Standard published on 13.5.2008
Selected format:Organic inorganic compound fertilizer
Standard published on 19.11.2020
Selected format:Latest update: 2026-09-18 (Number of items: 2 301 509)
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