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YS/T 739-2010 Determination of cryolite rate and main components of electrolyte—X-ray fluorescence spectrometric analysis method (USD) via email in 1-3 business day VALID
GB/T 5195.2-2006 Fluorspar―Determination of carbonate content via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 6609.6-2018 Chemical analysis methods and determination of physical performance of alumina—Part 6:Determination of potassium oxide content (USD) via email in 1-3 business day VALID
GB/T 7999-2007 Optical emission spectrometric analysis method of aluminum and aluminum alloys via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 26052-2010 Tubular welding rods of tungsten carbide (USD) via email in 1-3 business day VALID
YS/T 807.4-2012 Chemical analysis methods of aluminum hardeners—Part 4:Determination of chromium content—The ammonium persulfate oxidation-ammonium ferrous sulfate titrimetric method (USD) via email in 1-3 business day VALID
YS/T 273.8-1994 (USD) via email in 1-3 business day ABOLISHED
GB/T 20975.30-2019 Methods for chemical analysis of aluminium and aluminium alloys—Part 30:Determination of hydrogen content—Heating extraction-thermal conductivity method (USD) via email in 1-3 business day VALID
YS/T 807.7-2012 Chemical analysis methods of aluminium dardeners—Part 7:Determination of beryllium content—SCR spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 20975.25-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 25:Determination of elements content—Inductively coupled plasma atomic emission spectrometric method (USD) via email in 1 business day TO BE VALID
GB/T 6609.21-2004 Chemical analysis methods and Determination of physical performance of alumina Determination of gallium trioxide content-Butyrhodamine B spectrophotometric method (USD) via email in 1-3 business day VALID
YS/T 869-2013 Chemical analysis of 4A-Zeolite— X-ray fluorescence spectrometric method (USD) via email in 1-3 business day VALID
GB/T 20975.14-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 14:Determination of nickel content (USD) via email in 1 business day TO BE VALID
GB/T 20975.36-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 36:Determination of silver content—Flame atomic absorption spectrometry (USD) via email in 1 business day TO BE VALID
GB/T 4949-2007 Chemical analysis methods for sacrificial anodes of Al-Zn-In system alloy via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 20975.7-2008 Methods for chemical analysis of aluminium and aluminium alloys - Part 7:Determination of manganese content Potassium periodate spectrophotometric method (USD) via email in 1-3 business day VALID
GB 8153-1987 (USD) via email in 1-3 business day ABOLISHED
GB/T 13748.2-2005 Chemical analysis methods of magnesium and magnesium alloys—Determination of tin content—Pyrocatechol violet spectrophotometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 6609.11-2004 Chemical analysis methods and Determination of physical performance of alumina Determination of manganous oxide content-Flame atomic absorption spectrophotometric method (USD) via email in 1-3 business day VALID
YS/T 273.6-1994 (USD) via email in 1-3 business day ABOLISHED
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