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GB/T 5233-1985 Wrought bronzes--Chemical composition and forms of wrought products (USD) via email in 1-3 business day ABOLISHED
GB/T 14594-1993 Oxygen free copper sheets and strips via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 5122.13-1985 Methods for chemical analysis of brass--The chromazurol S photometric method for the determination of aluminum content via email in ABOLISHED please email coc@codeofchina.com for quotation
YS/T 813-2012 Methods of sampling and sample preparation for chemical composition analysis of waste miscellaneous brass (USD) via email in 1-3 business day VALID
GB/T 5121.15-1996 Copper and copper alloys-Determination of cobalt content (USD) via email in 1-3 business day ABOLISHED
GB/T 5121.12-1996 Copper and copper alloys-Determination of antimony content (USD) via email in 1-3 business day ABOLISHED
GB/T 2529-1989 Copper sheets for electrical conduction purpose via email in ABOLISHED please email coc@codeofchina.com for quotation
YS/T 990.9-2014 Methods for chemical analysis of copper matte—Part 9:Determination of iron content—Potassium dichromate titration method (USD) via email in 1-3 business day VALID
YS/T 990.2-2014 Methods for chemical analysis of copper matte—Part 2:Determination of gold and silver contents—Atomic absorption spectrmetry and fire assay method (USD) 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 (USD) via email in 1-3 business day VALID
GB/T 5230-1995 Electrodeposited copper foil via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 990.8-2014 Methods for chemical analysis of copper matte—Part 8:Determination of arsenic content—Hydride generation-atomic fluorescence spectrometry、silver diethyldithiocarbamate spectrophotometry and potassium bromate titrimetry (USD) via email in 1-3 business day VALID
GB/T 14956-1994 Special copper and copper alloy wires (USD) via email in 1 business day ABOLISHED
GB/T 466-1982 Classification of copper via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 17793-1999 Wrought copper and copper alloy plate,sheet and strip for general purposes--Dimensions and tolerances via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 5121.2-2008 Methods for chemical analysis of copper and copper alloys—Part 2:Determination of phosphorus content (USD) via email in 1-3 business day VALID
GB/T 11089-1989 Leaded brass strips for special purpose (USD) via email in 1-3 business day ABOLISHED
GB/T 5121.5-2008 Methods for chemical analysis of copper and copper alloys—Part 5:Determination of nickel content (USD) via email in 1-3 business day VALID
YS/T 990.14-2014 Methods for chemical analysis of copper matte—Part 14:Determination of zinc content—Atomic absorption spectrmetry and Na2EDTA titration methods (USD) via email in 1-3 business day VALID
YS/T 990.18-2014 Methods for chemical analysis of copper matte—Part 18:Determination of lead,zinc,nickel,arsenic,bismuth,antimony,calcium,magnesium,cadmium and cobalt content—Inductively coupled plasma atomic emission spectrometry (USD) via email in 1-3 business day VALID
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