GB/T 12689.4-2004 standard english preview version PDF file download
GB Standard Code
GB/T 12689.4-2004
Standard Category
China National Standards
GB Standard English Title
The methods for chemical analysis of zinc and zinc alloys--The determination of copper content--The lead diethyldithio-carbamate spectrophotometric method and the flame atomic absorption spectrometric method and the electrolytic method
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