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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
YS/T 815-2012 Preparation Method of Tese Pieces for Mechanical and Technological Properties of Copper and Copper Alloys 270.0 via email in 1~3 business day valid
GB/T 467-1997 Copper cathode 75.0 via email in 1~3 business day superseded
GB/T 5121.6-1996 Copper and copperr alloys-Determination of bismuth content 90.0 via email in 1~3 business day abolished
GB/T 2056-1980 Copper sheets for anode in electro-plate 180.0 via email in business day abolished
GB/T 14594-1993 Oxygen free copper sheets and strips 75.0 via email in 1~3 business day abolished
GB/T 3884.19-2017 Methods for chemical analysis of copper concentrates - Part 19: Determination of thallium content - Inductively coupled plasma mass spectrometry 100.0 via email in 1~3 business day valid
GB/T 5121.1-2008 Methods for chemical analysis of copper and copper alloys—Part 1:Determination of copper content 120.0 via email in 1 business day valid
GB/T 5120.1-1995 Methods for chemical analysis of blister copper--Determination of copper content 730.0 via email in 1~3 business day superseded
YS/T 990.5-2014 Methods for chemical analysis of copper matte―Part 5:Determination of fluorine content―Ion-selective electrode method 105.0 via email in 1~3 business day valid
GB/T 3133-1982 Brass wires for clocks via email in business day abolished
YS/T 521.6-2009 Methods for chemical analysis of blister copper - Determination of arsenic,antimony,bismuth,lead,zinc and nickel contents - Inductively coupled plasma-atomic emission spectrometry 105.0 via email in 1~3 business day valid
GB/T 5121.14-1996 Copper and copper alloys-Determination of manganese content 30.0 via email in 1~3 business day abolished
GB/T 13293.10-1991 Higher purity copper cathode-Determination of zinc content-Flame atomic absorption spectrometric method 45.0 via email in 1~3 business day abolished
GB/T 5121.27-2008 Methods for chemical analysis of copper and copper alloys - Part 27:The inductively coupled plasma atomic emission spectromertric method 150.0 via email in 1~3 business day valid
GB/T 5121.21-2008 Methods for chemical analysis of copper and copper alloys - Part 19: Determination of silver content 105.0 via email in 1~3 business day valid
GB/T 5121.3-1996 Copper and copper alloys-Determination of lead content 60.0 via email in 1~3 business day abolished
GB/T 2061-2004 Strip and foil of copper and brass for heat-exchanger fin 135.0 via email in 1~3 business day abolished
YS/T 990.3-2014 Methods for chemical analysis of copper matte―Part 3:Determination of sulfur content―Gravimetric method and combustion titration method 165.0 via email in 1~3 business day valid
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