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The Degreasing agents are a crucial material in the leather preparation process, mainly used to remove the natural oils (such as fats and triglycerides) from the inner and outer layers of raw leather. They can also emulsify and wash away dirt on the leather surface. Since oils can hinder the uniform penetration of subsequent chemicals (such as tanning agents, dyes, and finishing agents), resulting in problems such as oil spots, uneven coloring, and loose surface of the finished leather, the degreasing effect for highly oily skins (such as pigskin and sheepskin) directly affects the softness, fullness, and appearance quality of the finished leather.