CompagOs, a Swiss company from ETH Zürich, provides preclinical research services in the bone domain through its proprietary Bon3OID™ in vitro bone models. Using advanced 3D bioprinting technology, we develop biologically relevant and reproducible human organotypic bone models. These models support a range of services, including basic research, drug efficacy testing, and toxicity studies, with a special focus on bone biology, rheumatology, rare bone diseases, and bone oncology.