Modernization of the sound diffusion systems present in the stations of the M1 and M2 Lines to be carried out for the purpose of fire safety adaptation pursuant to the Ministerial Decree of 21.10.2015, including detailed construction design and maintenance of the sound diffusion systems installed in the stations of the M2 Line. CIG No. A03F7CE591 - CUP F47C19000300005
Modernization of the sound diffusion systems present in the stations of the M1 and M2 Lines to be carried out for the purpose of fire safety adaptation pursuant to the Ministerial Decree of 21.10.2015, including detailed construction design and maintenance of the sound diffusion systems installed in the stations of the M2 Line.