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Standards GB - Chinese national standards - Page 7632
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
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GB/T 4854.1-1999
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Acoustics—Reference zero for the calibration of audiometric equipment—Part 1:Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
WITHDRAWN published on 8.3.1999
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GB/T 4854.3-1998
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Acoustics--Reference zero for the calibration of audiometric equipment--Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators
WITHDRAWN published on 18.3.1998
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GB/T 4854.7-1999
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Acoustics—Reference zero for the calibration of audiometric equipment—Part 7:Reference threshold of hearing under free-field and diffuse-field listening conditions
WITHDRAWN published on 8.3.1999
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GB/T 4855-1984
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Families and products of linear amplifier for semiconductor integrated circuits
WITHDRAWN published on 18.12.1984
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GB 4856-1984
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WITHDRAWN published on 1.1.1984
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GB/T 4857.1-1992
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Packaging—Complete, filled transport packages—Identification of parts when testing
WITHDRAWN published on 4.4.1992
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GB/T 4857.10-1992
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Packaging—Transport packages—Sinusoidal vibration test method using a variable vibration frequency
WITHDRAWN published on 25.11.1992
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GB/T 4857.11-1992
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Packaging--Transport packages--Horizontal impact test methods
WITHDRAWN published on 22.6.1986
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GB/T 4857.13-1992
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Packaging--Transport packages--Low air pressure test method
WITHDRAWN published on 23.11.1987
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GB/T 4857.15-1999
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Packaging—Transport packages—Controlled horizontal impact test method
WITHDRAWN published on 10.9.1999
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