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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
Dust collector—Terminology
WITHDRAWN published on 2.7.2008
Selected format:Dust collector—Terminology—Part 1:Common ones
WITHDRAWN published on 3.6.1997
Selected format:Dust collector—Terminology—Part 2:Inertial dust collector,porous layer dust collector and wet scrubber
WITHDRAWN published on 3.6.1997
Selected format:Dust collector—Terminology—Part 3:Electrostatic precipitators
WITHDRAWN published on 3.6.1997
Selected format:Requirements for the declaration of the acoustic output of medical diagnostic ultrasonic equipment
WITHDRAWN published on 3.6.1997
Selected format:Requirements for protective current transformers for transient performance
WITHDRAWN published on 3.7.1997
Selected format:Generic specification on optical fibre amplifiers
WITHDRAWN published on 28.5.1997
Selected format:Generic specification of optical fiber amplifier
WITHDRAWN published on 7.10.2008
Selected format:Rubber, vulcanized—Determination of stress relaxation in compression at normal and at elevated temperature
WITHDRAWN published on 12.3.1982
Selected format:Basic specification for optical fibre amplifier test methods—Part 1:Test methods for gain parameters
WITHDRAWN published on 28.5.1997
Selected format:Latest update: 2026-02-01 (Number of items: 2 258 192)
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