Standards GB - Chinese national standards - Page 4439

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 44644.1-2024

Road vehicles—50 impedance radio frequency connection system interface—Part 1: Dimensions and electrical requirements

Standard published on 29.9.2024

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GB/T 44644.2-2024

Road vehicles—50 impedance radio frequency connection system interface—Part 2: Test procedures

Standard published on 29.9.2024

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GB/T 44645-2024

Measurement method for shielding effectiveness of electromagnetic shielding materials under the excitation of high power microwave
Execute Date: october 2026

Standard published on 29.9.2024

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electronic design (pdf) (480.00 USD)

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GB/T 44645-2024E

Measurement method for shielding effectiveness of electromagnetic shielding materials under the excitation of high power microwave
Execute Date: october 2026

Standard published on 29.9.2024

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electronic design (pdf) (ON REQUEST)

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GB/Z 44646-2024

Document management—Digital preservation—Analog recording to silver-gelatin microform

Standard published on 29.9.2024

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