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Standards GB - Chinese national standards - Page 4852
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 47837.4017-2026
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Materials for printed circuit boards and other interconnecting structures—Part 4-17: Prepreg for multilayer printed circuit boards—Non-halogenated epoxide woven E-glass prepreg for lead-free assembly
Execute Date: february 2027
Standard published on 2.7.2026
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GB/T 47838.1-2026
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Technical guide for operational condition assessment of hydraulic turbine and generator sets—Part 1: General
Execute Date: february 2027
Standard published on 2.7.2026
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GB/T 47838.3-2026
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Technical guide for operational condition assessment of hydraulic turbine and generator sets—Part 3: Health assessment
Execute Date: february 2027
Standard published on 2.7.2026
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GB/T 47839-2026
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Space environment—Model of the Earth""s magnetospheric magnetic field
Standard published on 2.7.2026
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GB/T 47840-2026
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Test methods for compatibility of construction materials with electrical insulating liquids
Execute Date: february 2027
Standard published on 2.7.2026
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GB/T 47841-2026
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Analysis requirements for risk assessment from space environmental effects on spacecraft
Standard published on 2.7.2026
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GB/T 47842-2026
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Space environment—Ground test method for laser irradiation of aerospace materials and components
Standard published on 2.7.2026
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GB/T 47843-2026
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Instrumentation important to safety for nuclear power plants—Characteristics and test methods of in-core self-powered neutron detectors
Execute Date: february 2027
Standard published on 2.7.2026
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GB/T 47844-2026
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Cable management systems—Cable ties for electrical installations
Execute Date: february 2027
Standard published on 2.7.2026
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GB/T 47845-2026
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Technical specification for three-phase induction motors for escalators application
Execute Date: february 2027
Standard published on 2.7.2026
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