References
- HEINEKEN - brewery
- CHEVRON - petrochemical industry
- ORLEN - petrochemical industry
- SLOVNAFT - petrochemical industry
- MOL - petrochemical industry
- OPEL - automotive
- AIR LIQUID - industrial gases
- AIR Products, industrial gases
- LINDE - industrial gases
- UWC, Thailand - ecological production of elektricity
- GREEN GAS - ecological production of elektricity
- VEOLIA - power plants, heating plants, water distribution
- MAVIR, Almásfüzitő, Hungary - power plants, heating plants
- WEGLOKOKS, PL - power plants, heating plants
- ZEM, PL - power plants, heating plants
- EC MIKOLAJ, PL - power plants, heating plants
- AZOTY GROUP - chemical industry
- AGROFERT - chemical industry
- SYNTHOS - chemical industry
- KGHM (Polish copper) - copper mining
- KOSOWNIA CZENSTOCHOWA, (ZARMEN G.A.) - production of coal coke
- PLYNEX, (VAE Controls) - ecological biogas plant, production of elektricity
- TEMPEST HOLD, SK - industry, construction industry
- VÝVOJ MARTIN, (CZECHOSLOVAK GROUP AG) - military industry