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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 31093-2014 |
Test method for stress of Monocrystalline sapphire ingot 蓝宝石晶锭应力测试方法 |
China National Standards Monocrystalline sapphire ingot |
 English PDF |
| GB/T 31092-2014 |
Monocrystalline sapphire ingot 蓝宝石单晶晶锭 |
China National Standards Monocrystalline sapphire ingot |
English PDF |
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