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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 33725-2017 |
Watch cases and accessories—Tests of the resistance to wear, scratching and impacts 表壳体及其附件 耐磨损、划伤和冲击试验 |
China National Standards scratching |
 English PDF |
| GB/T 30707-2014 |
Testing method on adhesion of fine ceramic coatings―scratching 精细陶瓷涂层结合力试验方法 划痕法 |
China National Standards scratching |
English PDF |
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