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GB/T 4324.18-2012 Methods for chemical analysis of tungsten - Part 18: Determination of potassium content - Flame atomic absorption spectrometry (USD) via email in 1-3 business day VALID
GB/T 26062-2010 Niobium and niobium-zirconium alloy wire (USD) via email in 1-3 business day VALID
GB/T 3460-2007 Ammonium molybdate via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YS/T 659-2007 Designation and composition of tungsten and tungsten alloy wrought product (USD) via email in 1-3 business day VALID
GB/T 4325.25-2013 Methods for chemical analysis of molybdenum—Part 25:Determination of hydrogen content—Inert gas fusion infrared absorption method/thermal conductivity method (USD) via email in 1-3 business day VALID
YS/T 402-2016 Zirconium oxide (USD) via email in 1-3 business day VALID
GB/T 6150.15-2008 Methods for chemical analysis of tungsten concentrates - Determination of bismuth content - Flame atomic absorption spectrometric method (USD) via email in 1-3 business day VALID
YS/T 397-2007 Sponge zirconium (USD) via email in 1-3 business day ABOLISHED
YS/T 258-1996 Niobium powders for metallurgy (USD) via email in 1-3 business day ABOLISHED
GB/T 24482-2009 Roasted molybdenum concentrate (USD) via email in 1-3 business day VALID
YS/T 568.9-2008 Chemical analysis methods for zirconium oxide and hafnium oxide-Determination of Al Ca Mg Mn Na Ni Fe Ti Zn Mo V Zr content in hafnium oxide-Inductively coupled plasma atomic emission spectrometry (USD) via email in 1-3 business day VALID
YS/T 568.5-2008 Chemical analysis methods for zirconium oxide and hafnium oxide-Determination of sodium content-Flame atomic absorption spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 3460-2017 Ammonium molybdate (USD) via email in 1 business day VALID
GB/T 8769-2010 Zirconium and zirconium alloy bars and wires (USD) via email in 1-3 business day VALID
YS/T 894-2013 Ammonium perrhenate (USD) via email in 1-3 business day ABOLISHED
YS/T 858-2013 Zircon concentrate (USD) via email in 1-3 business day VALID
YS/T 427-2012 Tantalum pentoxide (USD) via email in 1-3 business day VALID
YS/T 897-2013 Methods for chemical analysis of high purity niobium—Determination of trace impurity element content—Glow discharge mass spectrometry (USD) via email in 1-3 business day VALID
YS/T 568.3-2008 Chemical analysis methods for zirconium oxide and hafnium oxide-Determination of silicon content-Spectrophotometric method with the reduced silicomolybdic complex (USD) via email in 1-3 business day VALID
GB/T 4324.14-2012 Methods for chemical analysis of tungsten - Part 14: Determination of residue content after chloride volatility - Gravimetric method (USD) via email in 1-3 business day VALID
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