GB - Chinese national standards

Chemical analysis methods for rare earth residue and waste water—Part 2:Determination of chemical oxygen demand(COD)

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Chemical analysis methods for rare earth waste residue and waste water—Part 3: Determination of weak radioactivitytotal activity of and

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Chemical analysis methods for rare earth waste residue and waste water—Part 4: Determination of copper, zinc, lead, chromium, cadmium, barium, cobalt, manganese, nickel and titanium contents—Inductively coupled plasma emission spectrometry

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Chemical analysis methods for rare earth residue and waste water—Part 5Determination of ammonia nitrogen content

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Chemical analysis methods for rare earth residue and waste water—Part 6: Determination of thallium and vanadium contents—Inductively coupled plasma mass spectrometry

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Chemical analysis methods for rare earth residue and waste water—Part 7: Determination of thorium and uranium contents—Inductively coupled plasma mass spectrometry

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Hardmetals—Abrasion tests for hardmetals

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Gold-coated silver and silver alloy bonding wires for semiconductor package

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Tungsten tubes

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Copper and copper alloy materials—Tensile testing at room temperature

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