The difference between cdmo and cro company

I think CDMO and CRO play different roles in drug development and production. CDMO, contract customization R&D and production organization, is mainly responsible for R&D and innovation of production technology, as well as customized production services from kilogram level to ton level. CRO, a contracted R&D organization, serves the whole stage of drug research and development, and is responsible for all or part of the activities involved in drug research and development. Both of them play an important role in the pharmaceutical outsourcing service industry chain.