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Does the white sound-absorbing cotton have polyester fiber and non-woven fabric?
White sound-absorbing cotton can be made of many materials, among which polyester fiber and non-woven fabric are one of the common materials.

Polyester fiber is a synthetic fiber material with high tensile strength and good heat resistance. When making sound-absorbing cotton, polyester fiber can be used as filler to absorb and disperse sound through its fine pore structure.

Non-woven fabric is a kind of non-woven fabric formed by interweaving and condensing fiber webs or fiber layers by chemical, thermal or mechanical methods. Non-woven fabrics have the characteristics of softness, breathability and sound absorption. They are often used as outer materials in the production of white sound-absorbing cotton, which can protect the inner filling materials.

Therefore, white sound-absorbing cotton can usually contain polyester fibers and non-woven fabrics. However, it should be noted that different brands and models of sound-absorbing cotton may use different material combinations.