Evaluation of 611 in Chinese Adults Patients With Moderate to Severe Chronic Obstructive Pulmonary Disease

This study tests a new inhaled medication called 611 in Chinese adults with moderate to severe COPD (chronic obstructive pulmonary disease), a lung condition that causes breathing difficulties, to see if it improves lung function. **You may be eligible if...** - You are between 40 and 85 years old - You have had a confirmed COPD diagnosis for at least 12 months - You are a current or former smoker with at least a 10 pack-year smoking history - Your breathing test results confirm moderate to severe COPD **You may NOT be eligible if...** - You have asthma or other lung diseases that are not COPD - You have had a severe COPD flare-up in the past 3 months - You have serious heart or kidney conditions that could be affected by the medication Talk to your doctor to see if this trial is right for you.