EirGenix Inc. is a contract development and manufacturing company based in New Taipei City, Taiwan, operating in Taiwan and internationally. It provides cell line development, process development, analytical and quality control, cGMP manufacturing for mammalian and microbial systems, and antibody-drug conjugate services. The company is also developing several biosimilars and antibody-drug conjugates, including EG12014/EGI014 (Trastuzumab biosimilar, under biologics license application), EG1206A (Pertuzumab biosimilar, Phase I), EG13074 (Preclinical), TSY0110(EG12043) (antibody-drug conjugate, Preclinical), EG12021 (Bevacizumab biosimilar, Preclinical), and EG62054 (biosimilar, Preclinical). Additionally, it manufactures and sells a COVID-19 antigen rapid test and EG74032, a CRM197 carrier protein. The company was incorporated in 2012.