CONSTRUCCIONES E INVERSIONES M&A EIRL

 GEO AMBIENTALES INGENIEROS S.A.C.  IECECG E.I.R.L.  CONSTRUCCIONES E INVERSIONES M&A EIRL  QUALITY HEALTH SAFETY ENVIRONMENT AND ENGINEERING CONSULTING S.A.C. QHSEC S.A.C.  CELTEX INGENIEROS S.A.C.