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GB/T 20235-2006 Technical specification for silver-tin oxide electric contact materials via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JB/T 7130-1993 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 9552.7-1999 Methods for chemical analysis of copper-chromium-zirconium alloys The determination of magnesium by atomic absorption spectrop hotometric mithod (USD) via email in 1-3 business day VALID
ZB K 14003.10-1988 via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 24300-2009 Test method of flaws of Cu-W contact (USD) via email in 1-3 business day VALID
ZB K 14003.5-1988 via email in ABOLISHED please email coc@codeofchina.com for quotation
JB/T 9548.3-1999 Methods for chemical analysis of iron-chromium-aluminium alloys The sodium periodate photometric method for the determination of manganese content via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 5351-2014 via email in VALID please email coc@codeofchina.com for quotation
JB/T 7780.1-1995 (USD) via email in 1-3 business day ABOLISHED
GB/T 24270-2009 Method of measurement of temperature coefficient of magnetic properties of permanent magnetic materials (USD) via email in 1-3 business day VALID
JB/T 6326.6-2008 Test methods for chemical analysis of Ni-Cr and Ni-Cr-Fe alloy—Part 6:Determination of aluminum content (USD) via email in 1-3 business day VALID
JB/T 5336-1991 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 17951-2005 Standard specification for magnetically hard materials via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JB/T 8633-1997 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 9549-1999 Technical specification for vacuum copper (USD) via email in 1-3 business day ABOLISHED
JB/T 6326.1-1992 (USD) via email in 1-3 business day ABOLISHED
JB/T 7778.4-1995 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
JB/T 8443.1-2014 via email in VALID please email coc@codeofchina.com for quotation
GB/T 5587-1985 Basic shapes dimensions symbols and notations of silver based electrical contacts (USD) via email in 1-3 business day ABOLISHED
JB/T 6237.5-2008 Test methods for chemical analysis of silver powder for electric contact material—Part 5:Determinatiln of natrium content (USD) via email in 1-3 business day VALID
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