You're looking for information on Sonofka 3D and its paper covering. Sonofka 3D is a type of acoustic material used for sound absorption and insulation. Here's what I found:

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Sonofka 3d -

You're looking for information on Sonofka 3D and its paper covering. Sonofka 3D is a type of acoustic material used for sound absorption and insulation. Here's what I found:

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