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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
Test method for tack of pressure sensitive adhesive tapes by rolling ball
Standard published on 29.5.2002
Selected format:Acoustics--Reference zero for the calibration of audiometric equipment--Part1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
Standard published on 13.5.2004
Selected format:Acoustics—Reference zero for the calibration of audiometric equipment—Part 3Reference equivalent threshold vibratory force levels for pure tones and bone vibrators
Standard published on 9.3.2022
Selected format:Acoustics--Reference zero for the calibration of audiometric equipment--Part 4:Reference levels for narrow-band masking noise
Standard published on 8.3.1999
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment- Part 5: Reference equivalent threshold sound pressure levels for pure tone in the frequency range 8 kHz to 16 kHz
Standard published on 2.7.2008
Selected format:AcousticsReference zero for the calibration of audiometric equipmentPart 6: Reference hearing threshold levels for test signals of short duration
Standard published on 3.9.2014
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment - Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
Standard published on 2.7.2008
Selected format:Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent threshold sound pressure levels for pure tone and circumaural earphones
Standard published on 14.11.2007
Selected format:Acoustics—Reference zero for the calibration of audiometric equipment—Part 9: Preferred test conditions for the determination of reference hearing threshold levels
Standard published on 24.2.2016
Selected format:Package of cotton goods and kintwear
Standard published on 25.12.1993
Selected format:Latest update: 2026-07-14 (Number of items: 2 286 733)
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