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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 20504-2006 |
Anodizing of aluminium and its alloys - Visual determination of image clarity of anodic oxidation coatings - Chart scale method 铝及铝合金阳极氧化 阳极氧化膜影像清晰度的测定 条标法 |
China National Standards clarity |
 English PDF |
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