This study presents an innovative management model to increase the service level at Soquitex, a Peruvian company dedicated to the production and commercialization of chemical auxiliaries for the textile industry. The model integrates lean manufacturing tools such as process standardization, the implementation of a visual Poka Yoke system, and multi-stage quality control. The methodology combines root cause analysis, value stream mapping (VSM), key performance indicators (KPI), and operational simulations. Through this systemic approach, inefficiencies related to product deterioration, labeling errors, and storage were identified. With the implementation of the model, the service level is expected to improve from 85.36% to 87.5%, reduce non-conforming products by 15%, and decrease customer complaints by over 75%. This study not only provides practical value to the chemical-textile industry but also introduces a replicable and empirically validated model that aligns quality, operational efficiency, and customer satisfaction.