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HY-797C Color gray card
| Product Name: | Color gray card |
|---|---|
| Model: | HY-797C |
| Category | Test material/meter |
| Origin: | China |
Describe：
Color gray card is used to Contrast and judge the fading of the specimen and canvas.
Technical data; HY-797A ：5, 4.5, 4,3.5,3, 2.5, 2,1.5,1
HY-797BC：5, 4-5.4，3-4, 3, 2-3, 2, 1-2, 1
