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DB37/T 3142-2018 Technical regulation of Phased-array Ultrasonic Testing for welded joints of small diameter pipe via email in 1 business day VALID please email coc@codeofchina.com for quotation
GB/T 22638.1-2008 Test methods for aluminium and aluminium alloy foils - Part 1: Determination of thickness by gravimetric method (USD) via email in 1-3 business day ABOLISHED
GB/T 34487-2017 (USD) via email in 1-3 business day VALID
GB/T 31780-2015 Critical temperature measurement—Critical temperature of composite superconductors by a resistance method (USD) via email in 1-3 business day VALID
GB/T 18502-2018 Critical current measurement—DC critical current of Ag-and/or Ag alloy-sheathed Bi-2212 and Bi-2223 oxide superconductors (USD) via email in 1-3 business day VALID
GB/T 11073-2007 Standard method for measuring radial resistivity variation on silicon slices (USD) via email in 1-3 business day VALID
GB/T 7999-2007 Optical emission spectrometric analysis method of aluminum and aluminum alloys via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YS/T 124-1994 via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 17473.2-1998 Test methods of precious metal pastes used for thick film microelectronics--Determination of fineness via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 22638.2-2016 Test methods for aluminium and aluminium alloy foils—Part 2:Determination of pinhole (USD) via email in 1-3 business day VALID
GB/T 19921-2005 Test method of particles on silicon wafer surfaces via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 4339-1999 Testing method for thermal expansion characteristic parameters of metallic materials (USD) via email in 1-3 business day ABOLISHED
YB/T 4148-2006 (USD) via email in 1-3 business day VALID
GB/T 18876.3-2008 Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis - Part 3: Determining the carbides rating in steels by automatic image analysis and stereology (USD) via email in 1-3 business day VALID
GB/T 1553-1997 STANDARD test methods for minority carrier lifetime in bulk germanium and silicon by measurement of photoconductivity decay via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 19346-2003 Measuring method of magnetic properties at alternative current for amorphousand nanocrystalline soft magnetic alloys via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 17473.4-1998 Test methods of precious metal pastes used for thick film microelectronics--Determination of adhesion via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 17473.7-1998 Test methods of precious metal pastes used for thick film microelectronics--Test of solderability and solderleaching resistance via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 22638.10-2008 Test methods for aluminium and aluminium alloy foils - Part 10: Determination of mass per unit area (surface density) of coatings (USD) via email in 1-3 business day ABOLISHED
GB/T 5252-2006 Germanium monocrystal - inspection of dislocation etch pit density via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
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