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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 24328.12-2020 |
Tissue paper and tissue products—Part 12: Determination of optical properties—Determination of opacity—Diffuse reflectance method 卫生纸及其制品 第12部分：光学性能的测定 不透明度的测定 漫反射法 |
China National Standards opacity—Diffuse |
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