| "Optical Flats " CNS Standards List| Method test | Method Test | Method Test | Electrical apparatus | Method determination | Tempered glass | Wooden walking | Micro Hardness | | 
| 
 | CNS 10490 
			            2022 Edition Optical Flats 光學平板 |   | |
| 
 | CNS 10490 
			            2017 Edition Optical Flats 光學平板 |   | 
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