Zai Lab Ltd is a holding company primarily engaged in biopharmaceutical business. The Company is focused on discovering, developing, and commercializing products that address medical conditions with significant unmet needs in the areas of oncology, immunology, neuroscience, and infectious disease. The Company has a series of patented drug candidates from the discovery stage to the late clinical project, including ZEJULA, OPTUNE, QINLOCK, NUZYRA and VYVGART, and others. The Company conducts its businesses within domestic and overseas markets.