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GB/T 5121.23-2008 Methods for chemical analysis of copper and copper alloys - Part 23: Determination of silicon content 180.0 via email in 1~3 business day valid
GB/T 5121.3-2008 Methods for chemical analysis of copper and copper alloys - Part 3: Determination of lead content 150.0 via email in 1~3 business day valid
GB/T 34640.3-2017 Classification and recycling and utilization of wrought aluminium and aluminium alloy scraps - Part 3: Utilization of scraps 100.0 via email in 1~3 business day valid
YS/T 276.10-2011 Methods for chemical analysis of indium Part 10:Determination of bismuth aluminium lead iron copper cadmium tin and thallium content-Inductively coupled plasma atomic emission spectrometry 180.0 via email in 1~3 business day valid
YS/T 71-2013 Chemical analysis of high purity aluminium-Determination of trace impurities-Glow discharge mass spectrometry 180.0 via email in 1~3 business day valid
GB/T 4324.17-2012 Methods for chemical analysis of tungsten - Part 17: Determination of sodium content - Flame atomic absorption spectrometry 110.0 via email in 1~3 business day valid
GB/T 4372.4-2001 Methods for chemical analysis of zinc oxide produced by direct process-Determination of cadmium oxide content-Atomic absorption spectrometry method 60.0 via email in 1~3 business day superseded
GB/T 3254.4-1998 Antimony trioxide--Determination of copper content 75.0 via email in 1~3 business day abolished
XB/T 224-2013 Lanthanum-praseodymium-neodymium oxide 120.0 via email in 1~3 business day valid
GB/T 5235-1985 Wrought nickels and nickel alloys-Chemical composition and forms of wrought products 60.0 via email in 1~3 business day abolished
YS/T 248.9-2007 Methods for chemical analysis of crude lead-Determination of bismuth content-Flame atomic absorption spectrometric method 75.0 via email in 1~3 business day valid
GB/T 26304-2010 Tin powder 120.0 via email in 1~3 business day valid
GB/T 12690.27-1990 Rare-earth metals and their oxides-Determination of ignition loss-Gravimetric method 15.0 via email in 1~3 business day abolished
GB/T 29915-2013 Lanthanum-magnesium Alloy 110.0 via email in 1~3 business day valid
GB/T 23517-2009 Ruthenium on activated carbon catalyst 180.0 via email in 1~3 business day valid
XB/T 219-2007 Cerium nitrate 60.0 via email in 1~3 business day superseded
GB/T 2967-1989 Cast tungsten carbide 30.0 via email in 1~3 business day abolished
YS/T 574.8-2009 Methods for chemical analysis of zirconium powder for electro-vacuum uses—Determination of hydrogen content-inert gas impulse fusion heat conductivity method 90.0 via email in 1~3 business day valid
GB/T 23603-2009 Test method of titanium and titanium alloy surface contamination layer 120.0 via email in 1~3 business day valid
GB/T 2044-1980 Cadmium-bronze sheets 30.0 via email in 1~3 business day abolished
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