English CONTACT WEBMAP PORTAL Legal warning ABOUT US COMMITMENT PRESS ROOM WHERE WE ARE 125 ANNIVERSARY ACTIVITIES RAILWAY INFRASTRUCTURES HIGH SPEED Meters TRAMS RENEWAL MAINTENANCE FACILITIES ELECTRIFICATION AND RAILWAY SYSTEMS CIVIL WORKS INFRASTRUCTURES ROADS TUNNELS EDIFICATION Cultural facilities Institutional and office buildings Shopping and leisure centers Parking lots Educational centers Hospital centers and residences Residential buildings Sports facilities Industrial facilities Others WATERWORKS PORT AND AIRPORT WORKS URBANIZATIONS CONSERVATION AND MAINTENANCE WATER TREATMENT AGGREGATES AND PREFABRICATED AGGREGATES PREFABRICATED ENGINEERING FACILITIES AND SYSTEMS ELECTRIFICATION AND RAILWAY SYSTEMS TRANSPORTATION AND ELECTRICAL DISTRIBUTION SOLUTIONS FOR BIO & PHARMA FIRE PROTECTION AEROPUERTOS Y PUERTOS TELECOMUNICACIONES GENERACIÓN DE ENERGÍA Y RENOVABLES MANTENIMIENTO Y SERVICIOS MANTENIMIENTO INTEGRAL Y ESPECIALIZADO FACILITY MANAGEMENT INGENIERÍA DE MANTENIMIENTO FUENTES E ILUMINACIÓN ORNAMENTAL EMPRESA DE SERVICIOS ENERGÉTICOS TECNOLOGÍA SISTEMAS DE INFORMACIÓN MEDIOAMBIENTALES SOLUCIONES PARA OPERADORES DE AGUA GESTIÓN MEDIOAMBIENTAL E HIDROLÓGICA RADIODIFUSIÓN PROFESIONAL CONCESIONES CONCESIONES FERROVIARIAS CONCESIONES DE CARRETERAS CONCESIONES INMOBILIARIAS CONCESIONES DE APARCAMIENTOS ENERGÍAS RENOVABLES GENERACIÓN DE ENERGÍA SERVICIOS MEDIO AMBIENTE SERVICIOS URBANOS RESIDUOS INDUSTRIALES TRANSPORTE, LOGÍSTICA Y MAQUINARIA TRANSPORTE DE MERCANCÍAS OFERTA INTERNACIONAL SERVICIOS EN TERMINALES MAQUINARIA ACTUALIDAD COMSA exporta su experiencia ferroviaria a Suecia[+] COMSA Industrial launches eQualtiq, a tool that reduces energy costs in buildings [+] COMSA Corporación is committed to a comprehensive and sustainable management of industrial waste [+] Twitter PRESENCE Germany Andorra Algeria Argentina Australia Brazil chili China Colombia Ecuador Spain France Latvia Lithuania Morocco Mexico Peru Poland Portugal UK Romania Sweden Swiss Turkey Uruguay Cookies allow us to offer our services. By using our services, you accept our use of cookies. To accept More information