Cimpor - Cimentos de Portugal is the largest Portuguese cement group, operating in eleven countries - Portugal, Spain, Morocco, Brazil, Tunisia, Turkey, Cape Verde, Mozambique, China, Egypt and South Africa, involved in manufacturing and marketing cement, hydraulic lime, concrete and aggregates, precast concrete and dry mortars.

In Portugal, Cimpor has major factories in Coimbra (Souselas), Vila Franca de Xira (Alhandra), Loulé and Figueira da Foz (Cabo Mondego).

Cimpor is listed on the Euronext Lisbon stock exchange and is a member of the benchmark PSI-20 index. Its two largest shareholders are Brazilian conglomerates which built up stakes in February 2010 in order to thwart a €3.9 billion takeover bid from steel maker Companhia Siderúrgica Nacional (CSN):Camargo Corrêa holds 32.9% and the Votorantim Group 21.2% (of which 17.3% was purchased from Lafarge and 3.7% from Cinveste). A 9.6% stake in Cimpor held by the bank Caixa Geral de Depósitos is also imputable to Votorantim due to an agreement between the parties.