GB - Chinese national standards

Assessment method of intelligent heavy medium separation system in coal preparation plant

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Metallic materials—Miniature specimens of plate and rod—Part 1: Fatigue test method

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Petroleum, petrochemical and natural gas industries—External corrosion protection of risers by coatings and linings—Part 2: Maintenance and field repair coatings for riser pipes

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PhotographyTransmission and reflection densitometers—Method for determining performance

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Imaging materials—Permanence—Vocabulary

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Photography—Processing chemicals—Specifications for 1-phenyl-3-pyrazolidinone

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Biotechnology—Genome editing—Part 1: Vocabulary

Available languages: English, Chinese

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Determination of purity and trace organic impurities of methanol—Gas chromatography

Available languages: English, Chinese

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Photography—Psychophysical experimental methods for estimating image quality—Part 3:Quality ruler method

Available languages: English, Chinese

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Vitreous and porcelain enamels—Preparation of samples and determination of thermal expansion coefficient

Available languages: English, Chinese

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