Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 1550-1997 methods for measuring conductivity type of extrinsic semiconducting materials 120.0 via email in 1~3 business day valid
GB/T 22638.3-2008 Test methods for aluminium and aluminium alloy foils - Part 3: Determination of stickiness 120.0 via email in 1~3 business day valid
GB/T 22638.2-2016 Test methods for aluminium and aluminium alloy foils―Part 2:Determination of pinhole 105.0 via email in 1~3 business day to be valid
GB/T 22638.7-2008 Test methods for aluminium and aluminium alloy foils - Part 7: Determination of heat seal strength 120.0 via email in 1~3 business day to be superseded
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 120.0 via email in 1~3 business day valid
GB/T 25897-2010 Superconductivity:Residual resistance ratio measurement of Nb-Ti composite superconductors 330.0 via email in 1~3 business day valid
GB/T 13925-2010 Metallographs for high manganese cast steel 20.0 via email in 1 business day valid
GB/T 19922-2005 Standard test methods for measuring site flatness on silicon wafers by noncontact scanning 150.0 via email in 1~3 business day valid
GB/T 22638.4-2008 Test methods for aluminium and aluminium alloy foils - Part 4: Determination of surface wetting tension 120.0 via email in 1~3 business day to be superseded
GB/T 22638.1-2016 Test methods for aluminium and aluminium alloy foils―Part 1:Determination of thickness 165.0 via email in 1~3 business day to be valid
GB/T 18032-2000 The inspecting method of AB microscopic defect in gallium arsenide single crystal 90.0 via email in 1~3 business day valid
GB/T 17473.7-1998 Test methods of precious metal pastes used for thick film microelectronics--Test of solderability and solderleaching resistance 75.0 via email in 1~3 business day superseded
GB/T 19921-2005 Test method of particles on silicon wafer surfaces 120.0 via email in 1~3 business day valid
GB/T 4060-2007 Polycrystalline silicon—Examination method—Vacuum zone-melting on boron 120.0 via email in 1~3 business day valid
GB/T 19289-2003 Methods of measurement of density,resistivity and stacking factor of electrical steel sheet and strip 100.0 via email in 1~2 business day valid
GB/T 19346-2003 Measuring method of magnetic properties at alternative current for amorphousand nanocrystalline soft magnetic alloys 90.0 via email in 1~3 business day to be superseded
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 255.0 via email in 1~3 business day valid
GB/T 17473.3-1998 Test methods of precious metal pastes used for thick film microelectronics--Determination of sheet resistance 90.0 via email in 1~3 business day superseded
YB/T 4182-2008 Steel wire ropes-Determination of lubricant content 120.0 via email in 1~3 business day valid
GB/T 22638.6-2008 Test methods for aluminium and aluminium alloy foils - Part 6: Determination of direct current resistance 120.0 via email in 1~3 business day valid
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