RecruitingPhase 2Drug trialA Phase II Clinical Study to Evaluate HLX43 in Subjects With Advanced Non-small Cell Lung Cancer (NSCLC)The study is being conducted to to explore the reasonable dosage and evaluate the efficacy, safety and tolerability of HLX43 (Anti-PD-L1 ADC) in Patients with Advanced Non-small Cell Lung Cancer (NSCLC)