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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 23981.1-2019 |
Paints and varnishes—Determination of hiding power—Part 1: Determination of contrast ratio of white and light coloured paints 色漆和清漆 遮盖力的测定 第1部分：白色和浅色漆对比率的测定 |
China National Standards Determination contrast ratio |
 English PDF |
| GB/T 23981-2009 |
Determination of contrast ratio of white and light coloured paints 白色和浅色漆对比率的测定 |
China National Standards Determination contrast ratio |
English PDF |
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