Purchase Of Maintenance And Driving Services For Heating, Ventilation, Air Conditioning (Cvc), Sanitary (Efs/Ecs) And Plumbing, On Behalf Of The Following Social Security Organizations, United As An Order Group: Urssaf Normandie, Urssaf Center Val De Loire, Caf Du Loir-Et-Cher, Cpam Du Loir-Et-Cher And Urssaf Nord Pas-De-Calais.