GB - Chinese national standards

Methods for chemical analysis of gold ores—Part 7: Determination of iron content

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Methods for chemical analysis of gold ores—Part 8: Determination of sulfur content

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Methods for chemical analysis of gold ores—Part 9: Determination of carbon content

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Sodium hydroxide for industrial use

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General principles for green supplier evaluation

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Lifts(elevators),escalators and moving walks - Risk assessment and reduction methodology

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Specification for equipping and managing of measuring instrument of energy in petroleum and petrochemical industry

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Specification for equipping and managing of the measuring instrument of energy in the nonferrous metals smelters

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Classification of condiment

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Classification of condiment

Available languages: English, Chinese

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