Mobile Telesystems is a provider of mobile cellular communications services in the Russian Federation, Ukraine, Uzbekistan and Turkmenistan to consumers and corporate customers, employing technology based primarily on Global System for Mobile Communications (GSM). Co. had a mobile subscriber base of around 102.5 million (77.3 million in Russia, 20.4 million in Ukraine, 2.1 million in Turkmenistan, 1.6 million in Uzbekistan and 1.1 million in Armenia). In addition to standard voice services, Co. provides improved services, including voice mail, short message service, general packet radio service, and various SMS- and GPRS-based information and entertainment services.

Polskie Gornictwo Naftowe I Gazownictwo SA Polish Oil & Gas Co (PGNiG) is an integrated natural gas company based in Poland. Co.'s core activity covers exploration and production of natural gas and crude oil as well as import, storage, trade and distribution of gas and liquid fuels. Co.'s scope of activity includes gas trading and commercial support, as well as operation, maintenance and expansion of its distribution system. Co.'s distribution networks comprises over 100 thousand kilometers of gas pipelines (high, upper-medium, medium and low pressure), which cover primarily industrialized and urbanized areas of the country.

Sistema is a telecommunications and technology investment group based in Russia. Co. invests in, and manages a range of companies which operate in the telecommunications, oil and energy, high technology, banking and other sectors. The main focus of Co.'s activities is service-based industries. Co.'s operations are organized along four segments: Telecommunications, Technology and Industry, Consumer Assets and Oil and Energy. Through its subsidiaries, Co.'s activities include: wireless telecommunications services , IT and systems integration, cable TV, manufacturing of radiotechnical equipment, oil, gas and energy production, banking activities, trading and investing and financing activities.