Overview A Study to Evaluate the Safety and Efficacy of HL231 Solution for Inhalation in Patients with COPD Status: RECRUITING Trial end date: 2025-10-01 Target enrollment: Participant gender: Summary To evaluate the efficacy and safety of HL231 Solution for Inhalation vs Ultibro in Chinese patients with moderate to very severe COPDPhase: PHASE3 Details Lead Sponsor: Haisco Pharmaceutical Group Co., Ltd.Collaborator: Sichuan Haisco Pharmaceutical Group Co., LtdTreatments: Inhalation