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Evaluation specifications for classification and grading of digital transformation service providers
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Industrial internet platform—Data dictionary for connecting industrial equipment
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Chromium metal—Determination of chromium content—The ammonium ferrous sulfate titrimetric method
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Methods for chemical analysis of chromium metal--The cupral spectrophotometric method for the determination of copper content
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Methods for chemical analysis of chromium metal--The alizarin violet spectrophotometric method for the determination of tin content
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Methods for chemical analysisof chromium metal--The infrared absorption method for the determination of carbon content
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Chromium metal—Determination of lead,tin,bismuth,antimony and asenic content—Inductively coupled plasma mass spectrometric method
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Chromium metal—Determination of sulfur content—Infrared absorption method and combustion-neutralization titration method
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Chromium metalDetermination of oxygen, nitrogen and hydrogen contentInert gas fusion thermal infrared detection method and conductivity method
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Chromiun metal—Determination of vanadium content—Tantalum reagent trichloromethane extraction spectrophtometry method
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