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Pulp bleaching is a key process to determine paper whiteness and appearance grade. Many paper enterprises still adopt traditional high-consumption bleaching processes, which have problems such as large chemical dosage, severe fiber damage, unstable whiteness and excessive residual chlorine. These problems not only increase production costs and reduce fiber utilization rate, but also cause peculiar smell and poor environmental protection performance of finished paper, failing to meet the quality standards of high-end printing and food-grade paper. Shandong Ludao Energy Technology Co., Ltd. innovates and optimizes pulp bleaching technology, adopting low-damage, high-efficiency composite bleaching systems. The new process can efficiently remove colored substances in pulp, steadily improve and balance pulp whiteness, and avoid local color difference and batch color deviation. At the same time, it reduces fiber damage rate and chemical consumption, lowers wastewater treatment pressure, and ensures that the finished paper is odor-free, clean and environmentally friendly. It helps enterprises stably produce high-whiteness and high-grade paper products and meet high-standard market procurement requirements.