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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 32561.5-2022 |
Infrared Optical Chalcogenide Glass Test Methods Part 5: Stress Birefringence 红外光学硫系玻璃测试方法 第5部分：应力双折射 |
China National Standards Infrared Optical Cha |
 English PDF |
| GB/T 32561.4-2022 |
Infrared Optical Chalcogenide Glass Test Method Part 4: Optical Absorption Coefficient 红外光学硫系玻璃测试方法 第4部分：光吸收系数 |
China National Standards Infrared Optical Cha |
English PDF |
| GB/T 40293-2021 |
Test method for refractive index of Infrared Optical Chalcogenide films 红外硫系光学薄膜折射率测试方法 |
China National Standards Infrared Optical Cha |
English PDF |
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