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Waste paper deinking is the core link of recycled paper production. Traditional deinking processes have prominent pain points such as incomplete ink removal, large fiber damage, high chemical consumption and poor pulp whiteness stability. Low-quality deinking effect directly leads to low-grade recycled paper, dark color and many impurities, which restricts enterprises from producing high-value recycled paper products. Shandong Ludao Energy Technology Co., Ltd. innovates and upgrades papermaking deinking technology, adopting high-efficiency composite deinking agents and segmented deinking process optimization schemes. Our technology can efficiently separate ink particles, sticky dirt and fiber impurities from waste paper, maximize the retention of intact fibers, and significantly improve the whiteness, purity and uniformity of recycled pulp. While ensuring excellent deinking effect, it reduces the damage rate of recycled fibers, lowers chemical and water consumption, and helps enterprises produce high-quality recycled paper that meets high-end market standards. It promotes the upgrading of recycled paper industry and realizes efficient resource recycling.