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Myrium provides maintenance and renovation services for existing buildings.
Myrium maintains and renovates existing buildings, offering building envelope, energy management, and integrated maintenance services. It serves residential, commercial, healthcare, education, and public sector clients. Founded in 1923 and formerly known as Groupe Rougnon, it is based in France. In December 2025, Bpifrance, CAPZA, and Amundi Private Equity Funds agreed to acquire a 60% majority stake.
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