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GB/T Recommended National Standards

Browse selected GB/T standards used in quality, testing, product compliance, and China market-entry workflows.

GB/T 3139-2026

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Test methods for thermal conductivity of fiber reinforced plastics

Issued: 2026-05-25
Effective: 2026-12-01

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GB/T 25109.5-2026

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Enterprise resource planning—Part 5：Reference architecture of cloud service

Issued: 2026-05-25
Effective: 2026-12-01

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GB/T 16863-2026

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Method for testing refractive index of crystals

Issued: 2026-05-25
Effective: 2026-12-01

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GB/T 12009.1-2026

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Plastics—Isocyanates for use in the production of polyurethanes—Part 1: Determination of total chlorine

Issued: 2026-05-25
Effective: 2026-12-01

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GB/T 47709-2026

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Test method for the pressure fluctuation measurement induced by rotor revolution of propulsor with duct

Issued: 2026-05-25
Effective: 2026-12-01

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GB/T 22047-2026

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Determination of the ultimate aerobic biodegradability of plastic materials in soil—Method by measuring the oxygen demand or carbon dioxide evolved in a closed respirometer

Issued: 2026-05-25
Effective: 2026-12-01

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GB/T 7999-2026

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Photoelectric direct reading atomic emission spectrometric method of aluminium and aluminium alloys

Issued: 2026-05-25
Effective: 2026-12-01

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GB/T 47635-2026

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Greenhouse gases—Quantification method and requirements for carbon footprint of products—Cement

Issued: 2026-05-25
Effective: 2026-12-01

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GB/T 13023-2026

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Corrugating medium

Issued: 2026-05-25
Effective: 2026-12-01

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