Magyar Olaj-Es Gazipari is an integrated oil and gas enterprise based in Hungary and active in central and eastern Europe. Co.'s core activities include: exploration and production of crude oil, natural gas and gas products; refining, transportation, storage and distribution of crude oil products in both retail and wholesale markets; importation, transportation, storage and wholesale trading of natural gas and other gas products; and the production and sale of olefins and polyolefins. TVK, the petrochemical affiliate of Co., is an olefin and polyolefin producer in Hungary.

OMV is an international energy company with activities in Exploration and Production (E&P), Refining and Marketing including petrochemicals (R&M), and Gas and Power (G&P). Co. explores and develops oil and gas resources and supply energy to over 100 million people. OMV has three operating segments: Exploration and Production (E&P), Refining and Marketing, including petrochemicals (R&M), and Gas and Power (G&P), as well as the segment Corporate and Other (Co&O).

Polski Koncern Naftowy Orlen's activities are divided into three main business segments: the Refining Segment that comprises crude oil processing as well as wholesale and retail trade in refinery products. The Petrochemical Segment that encompasses production and sale of petrochemicals and chemicals. The Retail Segment that comprises of sales at petrol stations. Co.'s basic products include gasolines, diesel oils, light heating oil, Jet fuel, liquid gas, polyetylene, polypropylene, benzene, butadiene, acetone, phenol, glycols, toluen, ortoxylene.

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.

Schoeller-Bleckmann Oilfield Equipment is engaged as a producer of high precision components and a supplier of oilfield equipment for the oilfield service industry. Co. focuses on non-magnetic drillstring components (non-magnetic drill collars) and downhole tools for drilling and completing directional and horizontal wells. The High Precision Components segment consists of the manufacturing of MWD (Measuring While Drilling) and LWD (Logging While Drilling) precision drillstring components. The Oilfield Equipment segment comprises production and distribution of non-magnetic drill collars, drilling motors and tools for downhole circulation applications, repair and maintenance services.