Nokia Oyj on vuonna 1865 perustettu monikansallinen televiestintä-, tietotekniikka- ja kulutuselektroniikkayritys.

Vodafone Group plc is a British multinational telecommunications company.

O2 is a global brand name owned by the Spanish telecommunications company Telefónica.

BT Group plc is a British multinational telecommunications holding company headquartered in London, England.

Verizon Communications Inc. is an American multinational telecommunications conglomerate and a corporate component of the Dow Jones Industrial Average.

AT&T Inc. is an American multinational conglomerate holding company that is Delaware-registered but headquartered at Whitacre Tower in Downtown Dallas, Texas.

Telefónica, S.A. is a Spanish multinational telecommunications company headquartered in Madrid, Spain.

Movistar is a major telecommunications brand owned by Telefónica, operating in Spain and in many Latin American countries.

Mondi Štětí is a paper mill in the Czech Republic, part of the international Mondi Group.

Pegas Nonwovens is a leading European producer of non-woven textiles.

ISS A/S is a Danish facility management services company founded in Copenhagen, Denmark, in 1901.

FLSmidth & Co. A/S is a Danish multinational engineering company based in Copenhagen, Denmark.