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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 223.48-1985 |
Methods for chemical analysis of iron，steel and alloy--The SEMixylenol orange photometric method for the determination of bismuth content 钢铁及合金化学分析方法 半二甲酚橙光度法测定铋量 |
China National Standards SEM |
 English PDF |
| GB/T 4298-1984 |
The activation analysis method for the determination of elemental impurities in SEMiconductor silicon materials 半导体硅材料中杂质元素的活化分析方法 |
China National Standards SEM |
English PDF |
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