CKD Bio Corp. manufactures and distributes drug substances based on fermentation, synthesis, and biotechnology in South Korea. It offers drug substances in the areas of antibiotic, ß-lactamase inhibitors, immunosuppressants, anticancer drugs, obesity treatment drugs, dry eye, antivirus, antituberculosis, antihyperlipidemics, and probiotics. The company also provides contract research and development, and manufacturing services for active pharmaceutical ingredients and intermediates, and probiotics. It also exports its products. The company was founded in 1941 and is headquartered in Seoul, South Korea.