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Coated paper has extremely high requirements for surface coating uniformity. Uneven coating thickness, local coating missing and coating streaks are key defects that restrict the grade of coated paper. Uneven coating will lead to inconsistent surface smoothness, inconsistent ink absorption and color difference in printing, making products unable to meet high-end printing and packaging standards. Many paper mills rely on repeated coating to make up for defects, which greatly increases coating material consumption and production costs. Shandong Ludao Energy Technology Co., Ltd. provides professional coating optimization and uniformity improvement solutions. We optimize coating fluidity, leveling performance and fiber surface adsorption uniformity through high-efficiency coating auxiliaries and process parameter calibration. The technology effectively eliminates coating streaks, missing coating and thickness deviation, forms a smooth and uniform protective coating on the paper surface, and significantly improves paper gloss, smoothness and printing presentation effect. It helps enterprises reduce coating consumption, improve coated paper grade, and occupy a dominant position in the high-end coated paper market.