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With the continuous expansion of functional paper application scenarios, sound insulation paper has been widely used in architectural decoration, household packaging, electronic equipment and other fields. Ordinary paper has a single fiber structure and dense texture, resulting in poor sound absorption and sound insulation performance, which cannot meet the noise reduction needs of special scenarios. Many traditional sound insulation paper production processes have complex procedures, high raw material costs and unstable sound insulation effects, restricting enterprises from mass production and market promotion. Shandong Ludao Energy Technology Co., Ltd. launches professional paper sound insulation performance optimization solutions. By adjusting the internal gap structure of paper fibers and adopting multi-layer flexible composite technology, we form a porous sound-absorbing structure inside the paper, which effectively absorbs and isolates noise waves and significantly improves sound insulation and noise reduction effects. The optimized paper maintains lightweight and flexible characteristics, does not increase production difficulty and cost, and has stable noise reduction performance. It helps enterprises develop high-value functional sound insulation paper products and expand differentiated new market fields.