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GB/T 223.12-1991 standard english preview version PDF file download

GB Standard Code GB/T 223.12-1991
Standard Category China National Standards
GB Standard English Title Methodsfor chemical analysis of iron,steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
GB Standard Chinese Title 钢铁及合金化学分析方法 碳酸钠分离-二苯碳酰二肼光度法测定铬量
Chinese Version Price $15 USD per 50 pages
English Translation Price About $15  per 1 page; Inquire us for detail price

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