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GB/T 4339-2008 Test methods for thermal expansion characteristic parameters of metallic materials 360 (USD) via email in 1-3 business day VALID
GB/T 1555-1997 Test methods for determining the orientation of a semiconductor single crystal via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 14847-1993 Test method for thickness of lightly doped silicon epitaxial layers on heavily doped silicon substrates by infrared reflectance via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 1552-1995 Test method for measuring resistivity of monocrystal silicon and germanium with a collinear four-probe array via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YS/T 273.9-2006 Chemical analysis methods and physical properties of 90 (USD) via email in 1-3 business day VALID
GB 3492-1983 45 (USD) via email in 1-3 business day ABOLISHED
YS/T 617.5-2007 Determination of chemical compositions and physical properties of aluminum powder magnesium powder and Al-Mg alloy powder Part 5 Determination of grease content of aluminum powder via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 32280-2015 Test method for warp of silicon wafers—Automated non-contact scanning method 240 (USD) via email in 1-3 business day VALID
YS/T 617.1-2007 Determination of chemical compositions and physical properties of aluminum powder magnesium powder and Al-Mg alloy powder Part 1 Determination of active Al Mg or Al-Mg content Gasometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 3848-1983 Hardmetals; Determination of(the magnetization) coercivity 30 (USD) via email in 1-3 business day ABOLISHED
GB/T 5167-1985 Sintered metal materials and hardmetals; Determination of electrical resistivity 45 (USD) via email in 1-3 business day ABOLISHED
GB/T 6616-1995 Test method for measuring resistivity of semiconductor silicon or sheet resistance of semiconductor films with a noncontact eddy-current gage via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 4104-2003 Leucoscopic method for testing whiteness of zine oxide made by direct process 45 (USD) via email in 1-3 business day ABOLISHED
YS/T 629.3-2007 Chemical analysis methods of high purity alumina Determination of sodium oxide Flame atomic absorption spectrophotometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 617.8-2007 Determination of chemical compositions and physical properties of aluminum powder magnesium powder and Al-Mg alloy powder Part 8 Determination of apparent density via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YB/T 5321-2006 Determination of hermeticity of expansion alloys 45 (USD) via email in 1-3 business day VALID
YS/T 273.2-2006 Chemical analysis methods and physical properties of cryolite—Part 2:Determination of ignition loss via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 581.7-2006 Determination of chemical contents and physical properties of aluminium fluoride Part 7: Determination of iron content by orthophenantholine photometric method 75 (USD) via email in 1-3 business day VALID
YS/T 581.13-2006 Determination of chemical contents and physical properties of aluminium fluoride Part 13: Measurement of the angle of repose 75 (USD) via email in 1-3 business day VALID
YS/T 273.4-2006 Chemical analysis methods and physical properties of cryolite—Part 4:Determination of aluminium by the EDTA volumetric method 90 (USD) via email in 1-3 business day VALID
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