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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
Detail specification for electronic component--Directly heated negative temperature coefficient thermistor STYLE MF53-1--Assessment level E
WITHDRAWN published on 1.1.1986
Selected format:Methods of measurement for equipment used in terrestrial radio-relay systems—Part 2:Measurements for sub-systems—Section two-measurements in the antennas and passive repeaters
WITHDRAWN published on 6.8.1986
Selected format:Coated knitted fabrics from expanded PVC
WITHDRAWN published on 1.1.1986
Selected format:Coated knitted fabrics from expanded PVC
WITHDRAWN published on 30.12.1994
Selected format:polymeric materials, cellular flexible--Determination of compression set
WITHDRAWN published on 1.1.1986
Selected format:Polymeric material,cellular flexible—Determination of compression set
WITHDRAWN published on 24.10.2001
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WITHDRAWN published on 1.1.1978
Selected format:Chemical reagent—Zinc nitrate hexahydrate
WITHDRAWN published on 20.12.1995
Selected format:-
WITHDRAWN published on 1.1.1986
Selected format:Cellular plastics—Flexible polyurethane foam-Determination of resilience
WITHDRAWN published on 28.5.1997
Selected format:Latest update: 2026-06-25 (Number of items: 2 284 379)
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