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JB/T 7777.5-2008 Test methods for chemical analysis of silver-tin oxide-indium oxide electric contact material-Part 5:Determination of nickel zinc and indium contents 105 (USD) via email in 1-3 business day VALID
JB/T 9548.11-1999 Methods for chemical analysis of iron-chromium-aluminium alloys The phosphovanadomoly bdate yellow extraction photometric method for the determination of phosphorus content via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 13888-2009 Method of measurement of the coercivity of magnetic materials in an open magnetic circuit 180 (USD) via email in 1-3 business day VALID
GB/T 13397-2008 Technical specification for silver-metaloxide electrical contacts by alloy internal oxidation method 240 (USD) via email in 1-3 business day VALID
JB/T 7776.5-2008 Test methods for chemical analysis silver-cadmium oxide electric contact material—Part 5:Determination of bismuth content 75 (USD) via email in 1-3 business day VALID
GB/T 3217-2013 Permanent magnet(magnetically hard)materials—Methods of measurement of magnetic properties 300 (USD) via email in 1-3 business day VALID
JB/T 7777.4-2008 Test methods for chemical analysis of silver-tin oxide-indium oxide electric contact material-Part 4:Determination of zinc content 75 (USD) via email in 1-3 business day VALID
GB/T 8320-1987 Copper-tungsten and silver-tungsten electrical contacts via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 7778.3-2008 Test methods for chemical analysis of silver-tungsten carbide electric contact material-Part3:Determintion of overall carbon content 90 (USD) via email in 1-3 business day VALID
JB/T 6326.8-2008 Test methods for chemical analysis of Ni-Cr and Ni-Cr-Fe alloy—Part 8:Determination of sufi content 90 (USD) via email in 1-3 business day VALID
JB/T 7598-2008 Resistance welding electrodes alloys of Cu-Cr-Zr 90 (USD) via email in 1-3 business day VALID
GB/T 21220-2007 Soft magnetic metallic materials via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JB/T 7117-2008 Technical specification for high resistance alloys(Φ<0.20mm)of electrical heating 120 (USD) via email in 1-3 business day VALID
JB/T 7774.5-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material -Part 5:Determination of magnesium content 90 (USD) via email in 1-3 business day VALID
JB/T 6237.10-1992 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 6326.10-1992 60 (USD) via email in 1-3 business day ABOLISHED
GB/T 21219-2007 Magnetic materials - Classification 600 (USD) via email in 1-5 business day VALID
JB/T 7776.8-1995 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 7130-2008 Test method mechanical torque rate of spiral coils of thermostat metal 90 (USD) via email in 1-3 business day VALID
JB/T 6237.8-2008 Test methods for chemical analysis of silver powder for electric contact material—Part 8:Determinatiln of pH of aqueous solution 75 (USD) via email in 1-3 business day VALID
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