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Cationic demand stability is a hidden core index that determines the stable efficacy of all papermaking wet-end chemicals. Cationic demand refers to the total amount of anionic impurities in pulp and circulating white water, which directly affects the adsorption, retention and reaction efficiency of retention agents, sizing agents and strengthening agents. In actual production, seasonal raw material changes, recycled pulp doping ratio fluctuation and water quality variation will cause irregular cationic demand drift. When cationic demand is too high, a large number of anionic impurities consume auxiliary agents, resulting in insufficient agent efficacy, reduced paper strength and unstable sizing effect. When the demand is too low, excessive cationic agents remain in the water system, causing microbial imbalance and slime proliferation. Most paper mills adjust chemical dosage based on experience to adapt to demand changes, but passive regulation lags behind data fluctuation, leading to periodic batch quality instability and increased chemical consumption. Traditional anionic trash catchers only neutralize part of impurities temporarily and cannot lock long-term cationic demand balance. Shandong Ludao Energy Technology Co., Ltd. provides precise pulp cationic demand stabilization solutions. By permanently neutralizing persistent anionic trash, balancing wet-end charge equilibrium and resisting external raw material and water quality interference, we lock pulp cationic demand in the optimal process range. The solution maximizes the efficacy of wet-end chemicals, reduces auxiliary agent consumption, eliminates periodic quality fluctuation caused by charge imbalance, and realizes low-consumption and stable standardized production.