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The color fastness of curtain and sofa fabric high-quality upholstery fabric refers to its ability to retain its color intensity and resist fading or color bleeding when exposed to various external factors such as light, washing, rubbing, and environmental conditions. Color fastness is an essential quality for upholstery fabrics as it ensures that the fabric maintains its appearance and aesthetic appeal over time.

 Light fastness refers to the fabric's ability to resist fading or discoloration when exposed to light, particularly sunlight. Upholstery fabrics with high light fastness ratings are less prone to fading and maintain their color vibrancy even with prolonged exposure to sunlight.Wet rubbing fastness measures the fabric's resistance to color transfer or bleeding when rubbed with a wet or damp cloth. Fabrics with high wet rubbing fastness ratings are less likely to bleed or transfer color onto other surfaces, such as clothing or other upholstery.

Dry rubbing fastness evaluates the fabric's resistance to color transfer or rubbing off when rubbed with a dry cloth or abrasive surface. Fabrics with high dry rubbing fastness ratings are less prone to color transfer and maintain their color integrity even with frequent use and friction.Washing fastness assesses the fabric's ability to retain its color after washing or laundering. Fabrics with high washing fastness ratings maintain their color intensity and resist fading or color loss, even after repeated washing cycles.