WuXi XDC Cayman Inc. is an investment holding company that operates as a contract research, development, and manufacturing organization in China, North America, Europe, and internationally. It focuses on the discovery, research, development, and manufacture of drug substances and drug products for antibody drug conjugates, bioconjugates, monoclonal antibody intermediates, and payload-linkers associated with bioconjugates. The company also provides international sales contracting services and engages in the research, development, manufacturing, and marketing of anti-tumor drugs. Founded in 2013 and headquartered in Wuxi, China, it is a subsidiary of WuXi Biologics (Cayman) Inc. and has strategic collaborations with Earendil Labs and Akari Therapeutics.