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Standards GB - Chinese national standards - Page 4679

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 46602-2025

Vitreous and porcelain enamels—Determination of surface scratch hardness according to the Mohs scale

Standard published on 31.10.2025

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GB/T 46603-2025

Vitreous and porcelain enamels—Determination of crack formation temperature in the thermal shock testing of enamels

Standard published on 31.10.2025

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GB/T 46604-2025

Organic flat membrane unit for membrane bioreactor

Standard published on 31.10.2025

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GB/T 46605-2025

Rubber,vulcanized or thermoplastic—Determination of dynamic cutting resistance

Standard published on 31.10.2025

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GB/T 46606.1-2025

Plastics—Melamine/phenolic powder moulding compounds (MP-PMCs)—Part 1: Designation system and basis for specifications

Standard published on 31.10.2025

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GB/T 46606.2-2025

Plastics—Melamine/phenolic powder moulding compounds (MP-PMCs)—Part 2: Preparation of test specimens and determination of properties

Standard published on 31.10.2025

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GB/T 46606.3-2025

Plastics—Melamine/phenolic powder moulding compounds (MP-PMCs)—Part 3:Requirements for selected moulding compounds

Standard published on 31.10.2025

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GB/T 46607.1-2025

Plastics—Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs)—Part 1:General principles and moulding of multipurpose test specimens

Standard published on 31.10.2025

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GB/T 46607.2-2025

Plastics—Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs)—Part 2:Small plates

Standard published on 31.10.2025

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