SAINC was founded in 1977 on the 22nd of November with the name Otero, Tafur y Durán Ltda. Eight years later, on the 25th of September 1984, the company´s name became Saa & Angulo Ingenieros Constructores Ltda. The company´s was finally incorporated in October of 1997 with the present name, Sainc Ingenieros Constructores S.A. Our offices in Bogotá became operational in 2002. Six years later, in 2008, in the search for greater efficiency, two new complementary businesses were created: Skema S.A, for project promotion and management; and Dromos S.A., for rock aggregates and concrete asphalt production. In 2010, to take advantage of the strong economic growth cycle in emerging markets, we began our expansion into international markets by opening a subsidiary office in Lima, Peru, that is officially listed in the National Registry of Suppliers. With more than 40 years of existence, SAINC has built a number of important and widely recognized projects short-listed as follows:

• Cali: the main headquarters of Banco de Occidente, Clínica de la Fundación Valle del Lili, Universidad ICESI, several department stores of the La 14 chain and the bridge to the interchange on 26th street with carrera 15.

• Bogota: the traffic bridges on 100 street with carrera 15, the main headquarters of the city’s Cámara de Comercio, the Simón Bolívar Public Swinning Pool Complex as well as the realization of several construction, rehabilitation and maintenance projects on roads throughout the city.

• Medellín: the construction of the administrative complex Plaza de la Libertad (the headquarters of IDEA), Rionegro’s Indoor Coliseum and the Sports Complex and Parques del Río • Phase 1.1.