Important Greek companies such as Hellenic Aerospace Industry, Hellas Sat, Mytilineos Holdings, Titan Cement, Hellenic Petroleum, Papadopoulos E.J., Folli Follie, Jumbo S.A., OPAP, and Cosmote have their headquarters in the metropolitan area of Athens. Multinational companies such as Ericsson, Sony, Siemens, Motorola, Samsung, Microsoft, Novartis, Mondelez, Coca-Cola, etc. have their regional research and development headquarters also there. 