GB - Chinese national standards

Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore—Part 4Determination of iron trioxide content—Inductively coupled plasma atomic emission spectrometry

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Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore—Part 5Determination of sulfate radical content

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Standards for indoor air quality

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Household kitchen—Part 1: Term

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Household kitchen—Part 2: General technique request

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Household kitchen—Part 3: Test method and check rule

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Household kitchen—Part 4: Design and installation

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Technical specifications of ecological textiles

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TextilesTests for colour fastnessColour fastness to saliva

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Textiles—Tests for colour fastness—Colour fastness to saliva

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