Public contract relating to the maintenance of the Air Treatment Units of the laboratories and the computer room of the Paris Observatory, Paris site and Meudon

maintenance of the air handling facilities of the LESIA laboratory of the Paris Observatory (Meudon site)

maintenance of the air handling facilities and the inverter of the computer room of the Paris Observatory (Paris and Meudon site)

maintenance of the air handling unit of the GEPI laboratory of the Paris observatory, (Paris site), and the thermal regulation systems (air conditioning) of SYRTE (Paris site)