cotton felt fabric
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10. Color fastness to chlorinated water, atmospheric pollutants (ozone), and hypochlorite bleaching
After the test, use the color change gray card to evaluate the color change of the sample.
After the test, use the color change gray card to evaluate the color change of the sample.
It's the stroke that brings out the subtlety in a portrait, the shadow that gives depth to a landscape, the hue that whispers the unsaid in a still life It's the stroke that brings out the subtlety in a portrait, the shadow that gives depth to a landscape, the hue that whispers the unsaid in a still life
