Standards GB - Chinese national standards - Page 174

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 12274.401-2023

Quartz crystal controlled oscillators of assessed quality—Part 4-1: Blank detail specification—Capability approval

Standard published on 6.8.2023

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GB/T 12275-1990

The rule of type designation for quartz crystal oscillators

Standard published on 15.3.1990

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GB/T 12276-1990

Fixed resistors for use in electronic equipment--Part 7:Sectional specification--Fixed resistor networks in which not all resistors are individually measurable

Standard published on 15.3.1990

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GB/T 12277-1990

Fixed resistors for use in electronic equipment--Part 7:Blank detail specification--Fixed resistor networks in which not allresistors are individually measurable--Assessment level E

Standard published on 15.3.1990

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GB 12279-2008

Cardiovasular implants—Cardiac valve prostheses

Standard published on 31.12.2008

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