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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 9966.18-2021 |
Test methods for natural stone-Part 18:petrographic examination 天然石材试验方法 第18部分：岩相分析 |
China National Standards petrographic |
 English PDF |
| GB/T 16773-2008 |
Method of preparing coal samples for the coal petrographic analysis 煤岩分析样品制备方法 |
China National Standards petrographic |
English PDF |
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