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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
Indoor and outdoor post insulators for systems with nominal voltage greater than 1000 V - Part 2: Dimensions and characteristics
Standard published on 30.6.2008
Selected format:Natural rubber latex concentrate—Centrifuged or creamed, ammonia-preserved types—Specifications
Standard published on 7.9.2023
Selected format:Slotted set screws with dog point
Standard published on 24.6.1988
Selected format:Rubber latex—Sampling
Standard published on 11.10.2021
Selected format:Rubber latex—Determination of coagulum content (sieve residue)
Standard published on 6.8.2023
Selected format:Natural rubber latex concentrate—Determination of volatile fatty acid number
Standard published on 25.4.2025
Selected format:Rubber latex, natural concentrate—Determination of sludge content
Standard published on 4.6.2019
Selected format:Natural rubber latex concentrate - Determination of boric acid content
Standard published on 15.5.2008
Selected format:Natural Rubber and latex - Determination of copper content - Photometric method
Standard published on 4.6.2008
Selected format:Raw natural rubber and rubber latices - Determination of manganese content - Sodium periodate photmetric methods
Standard published on 4.6.2008
Selected format:Latest update: 2026-04-28 (Number of items: 2 274 955)
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