电缆用铜带箔材
Copper strip and foil for cables
Copper strip and foil for cables
Standard method for measuring radial resistivity variation on silicon slices
Methods for chemical analysis of silver-Determination of silver content-Silver chloride precipitationflame atomic absorption spectrometric method
High purity germanium dioxide
Methods for chemical analysis of silver-Determination of lead and bismuth contents-Flame atomic absorption spectrometric method
Methods for chemical analysis of silver-Determination of antimony content The inductively coupled plasma atomie emission speetrometrie method
Reduced germanium ingot
Methods for chemical analysis of silver-Determination of copper contents Flame atomic absorption spectrometric method
Methods for chemical analysis of gold-Determination of arsenic and tin contents Hydride generation-atomic fluorescence spectrometry
Methods for chemical analysis of silver-Determination of iron contents-Flame atomie absorption spectrometric method