42 Development of products for others; Drug development service; Research and development of new products; Biochemical research and development; Custom design and development of chemical reagent antibodies and conjugate antibodies; Research and development in the field of pharmaceutical biomedicine and biotechnology, especially the research of antibodies including conjugated antibodies; Biomedical research services; Development of pharmaceutical preparations and medicines; Research and development of Antibody-drug Conjugates; Research and development of drug conjugates