GB - Chinese national standards

Ferrosillicon—Determination of silicon, manganese, aluminium, calcium, chromium and iron contents—Wavelength dispersive X-ray fluorescence spectrometry (Fused cast bead method)

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Ferrosilicon—Determination of chromium content—Diphenylcarbazide spectrophotometric method

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Ferrosilicon—Determination of sulfur content—Infrared absorption method and chromatographic separation-barium sulfate gravimetric method

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Ferrosilicon—Determination of calcium content—Flame atomic absorption spectrometry

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Ballast water treatment system—Part 1Requirements

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Ballast water treatment system—Part 2:Electrolytic method

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Ballast water treatment system—Part 4Discharge sampling facilities and procedure

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Internet data center(IDC) technical and classification requirements

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Safety requirements of conductive charging and discharging for electric vehicles

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Specification for commissioning and acceptance of stand-alone microgrid

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