GB - Chinese national standards

Chemicals—Guidance on hazard classification to the aquatic environment—Part 5: Bioconcentration

Available languages: English, Chinese

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Chemicals—Guidance on hazard classification to the aquatic environment—Part 6Quantitative structure-activity relationship(QSAR)

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Chemicals—Guidance on hazard classification to the aquatic environment—Part 7:Classification of metals and metal compounds

Available languages: English, Chinese

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Chemicals—Guidance on hazard classification to the aquatic environment—Part 8:Guidance on transformation/dissolution of metals and metal compounds in aqueous media

Available languages: English, Chinese

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Guideline for defect repair of buried steel pipelines

Available languages: English, Chinese

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Irrigation equipment—Safety devices for chemigation—Part 1: Small plastics valves for chemigation

Available languages: English, Chinese

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Irrigation equipment—Safety devices for chemigation—Part 2: Chemigation valve assemblies from DN 753 to DN 35014

Available languages: English, Chinese

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Hydraulic fluid power—Pressure switches—Mounting surfaces

Available languages: English, Chinese

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Iron ore concentrate

Available languages: English, Chinese

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Test method for carrier concentration of gallium nitride substrates—Raman spectrum method

Available languages: English, Chinese

Available design: electronic design (pdf), Print design