F t X Start Homepage OR About us know us C Quality and environment Classification S Machinery Our means n Edification Our constructions to Civil work Our works z Demolitions and demolitions Our takedowns J Water management and Maintenance Our service c Contact Find us www.congesaxxi.com CONGESA XXI Business. Congesa XXI is a construction company from Salamanca . Founded in 2005, but endowed with a staff with a long professional career and with an important machinery park. We carry out any type of work related to construction, in Salamanca or anywhere else in the country. Works that range from construction (complete, in all its phases), reforms and rehabilitation, civil and hydraulic works (including management and maintenance of supply networks) and demolition and demolition works . F t