Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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HG/T 3607-2007 Magnesium hydroxide for industrial use 150.0 via email in 1~3 business day valid
GB/T 2091-2003 Phosphoric acid for industrial use 120.0 via email in 1~3 business day abolished
HG 2-243-1965 via email in business day abolished
GB 11213.7-1989 Sodium hydroxide for chemical fiber use; Determination of copper mass fraction; Spectrometric method 30.0 via email in 1~3 business day abolished
DL 422.3-1991 Determination for iron content in industrial hydrochloric acid - Phenanthroline spectrophotometric method 60.0 via email in 1~3 business day abolished
HG/T 3821-2006 Nano - Powder of magnesium hydroxide 150.0 via email in 1~3 business day valid
GB/T 4348.1-2013 Sodium hydroxide for industrial use—Determination of sodium hydroxide and sodium carbonate content 110.0 via email in 1~3 business day valid
HG/T 3942-2007 Sodium hydroxide for industrial use-Determination of metal and nonmetal ions content-ICP method 60.0 via email in 1~3 business day valid
HG/T 4509-2013 High Purity Hydrofluoric Acid for Industrial Use 150.0 via email in 1~3 business day valid
DL 422.2-1991 Determination for industrial hydrochloric acid content - Volumetric method 60.0 via email in 1~3 business day abolished
HG/T 3783-2005 By-product hydrochloric acid 90.0 via email in 1~3 business day valid
HG/T 2527-2011 Sulfamic acid for industrial use 230.0 via email in business day valid
GB/T 4348.2-2002 Sodium hydroxide for industrial use - Determination of sodium content - Mercurimetric method 75.0 via email in 1~3 business day superseded
HG/T 3688-2010 Flaky and high-quality potassium hydroxide 140.0 via email in 1 business day valid
GB/T 4147.1-1984 Method of test for nitric acid content in concentrated nitric acid-Volumetry 15.0 via email in 1~3 business day abolished
GB/T 11213.5-2006 Sodium hydroxide for chemical fiber use—Determination of sulphate content 90.0 via email in 1~3 business day valid
GB/T 11199-1989 Membrane process sodium hydroxide 30.0 via email in 1~3 business day abolished
GB/T 12684.2-1990 Boric acid for industrial use-Determination of insoluble substance content in water 15.0 via email in 1~3 business day abolished
HG/T 2834-2009 Zinc oxide for soft magnetic ferrite use 150.0 via email in 1~3 business day valid
GB/T 538-2006 Boric acid for industrial use 60.0 via email in 1~3 business day valid
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