| AB Facility, Plc. | CZ | Prague |
| AERO Vodochody AEROSPACE Plc. | CZ | Central Bohemian Region |
| AGC Automotive Czech, Plc. | CZ | Ustí Region |
| AGC Flat Glass Czech Plc. | CZ | Ustí Region |
| AGC Glass Europe ltd. | BE | Walloon Region |
| AGC Warszawa, Plc. | PL | Macovian Province |
| AL INVEST Břidličná, Plc. | CZ | Moravian-Silesian Region |
| Arcelor Mittal Ostrava, Plc. | CZ | Moravian-Silesian Region |
| ARCH Consulting Ltd. | CZ | Prague |
| Belje d.d. | HR | Croatia |
| BILLA Ltd. | CZ | Prague |
| Bílovec Municipal Authority | CZ | Moravian-Silesian Region |
| BONATRANS GROUP, Plc. | CZ | Moravian-Silesian Region |
| Bratislava - Staré Mesto District Authority | SK | Bratislava Region |
| Bratislava Municipal Authority | SK | Bratislava Region |
| Bratislava Regional Authority | SK | Bratislava Region |
| Bratislava – Ružinov District Authority | SK | Bratislava Region |
| Brno St. Ann University Hospital | CZ | South Moravian Region |
| Bruntal Municipal Authority | CZ | Moravian-Silesian Region |
| Bureau of the Constitutional Court of the Slovak Republic | SK | Košice Region |
| Bystřice pod Hostýnem Municipal Authority | CZ | Zlín Region |
| ČD Cargo, Plc. | CZ | Prague |
| ČD – Telematika, Plc. | CZ | Prague |
| Central Military Hospital in Prague | CZ | Prague |
| Česká Lípa Hospital | CZ | Liberec Region |
| Česká Spořitelna, Plc. (Czech Savings Bank) | CZ | Prague |
| Česká telekomunikační infrastruktura Plc. | CZ | Prague |
| České Radiokomunikace, Plc. (Czech Radiocommunications) | CZ | Prague |
| Cheb Municipal Authority | CZ | Karlovy Vary Region |
| CHEMES, Plc. Humenné | SK | Prešov Region |
| Coal Services, Plc. | CZ | Ustí Region |
| Coca -Cola HBC Czech & Slovakia | CZ | Prague |
| Conbelts Sulore, Ltd. | PL | Silesian Province |
| CONTEG Ltd. | CZ | Prague |
| Czech Agricultural University in Prague | CZ | Prague |
| Czech Radio | CZ | Prague |
| Czech Railways, Plc. | CZ | Prague |
| Dąbrowska Fabryka Maszyn Elektrycznych Damel SA | PL | Silesian Province |
| DENSO MANUFACTURING CZECH Ltd. | CZ | Liberec Region |
| District of Těrlicko | CZ | Moravian-Silesian Region |
| Doosan Škoda Power Ltd. | CZ | Plzeň Region |
| DT Points and Bridges, Plc. | CZ | Olomouc Region |
| E.ON Czech Republic, Ltd. | CZ | South Bohemian Region |
| East Bohemian Aiport Plc. | CZ | Pardubice Region |
| Energetický a průmyslový holding, Plc. | CZ | Prague |
| ENGIE Services Ltd. | SK | Bratislava Region |
| ENGIE Services Plc. | CZ | Prague |
| Equa bank Plc. | CZ | Prague |
| ESET, Ltd. | SK | Bratislava Region |
| ETD Transformátory, Plc. | CZ | Plzeň Region |
| EUROVIA Kamenolomy Plc. | CZ | Liberec Region |
| FCC Czech Republic, Ltd. | CZ | Prague |
| FoodCare Ltd. | PL | Lesser Poland Province |
| FORTUNA GAME Plc. | CZ | Prague |
| GCE, Ltd. | CZ | Vysočina Region |
| General University Hospital in Prague | CZ | Prague |
| GLOBUS ČR, v.o.s. | CZ | Prague |
| Górnośląskie Przedsiębiorstwo Wodociągów S.A. | PL | Silesian Province |
| Górnośląskie Towarzystwo Lotnicze, Plc. | PL | Silesian Province |
| GPW Inżynieria Ltd. | PL | Silesian Province |
| HAMZA Specialised Sanatorium for Children and Adults in Luže | CZ | Pardubice Region |
| Heimstaden Czech Ltd. | CZ | Moravian-Silesian Region |
| HERN Ltd. | SK | Žilina Region |
| HOCHTIEF CZ Plc. | CZ | Prague |
| HOCHTIEF Polska Plc. | PL | Macovian Province |
| I.D.C. Holding, Plc. | SK | Bratislava Region |
| Infotea Ltd. | CZ | Ustí Region |
| innogy Czech Republic, Plc. | CZ | Prague |
| innogy Polska Plc. | PL | Macovian Province |
| Institute For Clinical and Experimental Medicine | CZ | Prague |
| Ivančice Hospital | CZ | South Moravian Region |
| JGL, Plc. | HR | Croatia |
| Johns Manville Slovakia, Plc. | SK | Trnava Region |
| Karviná – Ráj Hospital | CZ | Moravian-Silesian Region |
| KERAMOST, Plc. | CZ | Ustí Region |
| Knauf Insulation, Ltd. | SK | Banská Bystrica Region |
| Kofola Plc. | CZ | Moravian-Silesian Region |
| Kolín Regional Hospital Plc. | CZ | Central Bohemian Region |
| KORADO, Plc. | CZ | Pardubice Region |
| Košice Municipal Authority | SK | Košice Region |
| Královské Vinohrady University Hospital | CZ | Prague |
| Kravaře Municipal Authority | CZ | Moravian-Silesian Region |
| Kuźnia Ostrów Wielkopolski Ltd. | PL | Greater Poland Province |
| Kyjov Hospital | CZ | South Moravian Region |
| Kyjov Municipal Authority | CZ | South Moravian Region |
| Levice Municipal Authority | SK | Nitra Region |
| Liberec Regional Authority | CZ | Liberec Region |
| M - SILNICE, Plc. | CZ | Pardubice Region |
| MCE Slaný Ltd. | CZ | Central Bohemian Region |
| MECOM Humenné, Plc. | SK | Prešov Region |
| MIBRAG | DE | Germany |
| Michalovce Psychiatric Hospital | SK | Košice Region |
| Milsy, Plc. | SK | Trenčín Region |
| Ministry of Economics of the Slovak Republic | SK | Bratislava Region |
| Ministry of Interior of the Slovak Republic | SK | Bratislava Region |
| MND Plc. | CZ | South Moravian Region |
| Mondi AG | Other | Austria |
| Mondi SCP, Plc. | SK | Žilina Region |
| Mondi Štětí, Plc. | CZ | Ustí Region |
| MONETA Money Bank, Plc. | CZ | Prague |
| Moravian-Silesian Region | CZ | Moravian-Silesian Region |
| MS UTILITIES & SERVICES, Plc. | CZ | Moravian-Silesian Region |
| MSV Metal Studénka Plc. | CZ | Moravian-Silesian Region |
| Na Bulovce Hospital | CZ | Prague |
| Na Homolce Hostpital | CZ | Prague |
| NET4GAS Ltd. | CZ | Prague |
| Nexteer Automotive Poland Ltd. | PL | Silesian Province |
| Nitra Municipal Authority | SK | Nitra Region |
| Nové Město na Moravě Hospital | CZ | Vysočina Region |
| O2 Czech Republic Plc. | CZ | Prague |
| Odlewnia Żeliwa Plc. | PL | Silesian Province |
| OKK Koksovny Plc. | CZ | Moravian-Silesian Region |
| Opatovice Power Stations, Plc. | CZ | Pardubice Region |
| Orlová Municipal Authority | CZ | Moravian-Silesian Region |
| Ostrava Water and Sewerage, Plc. | CZ | Moravian-Silesian Region |
| OSTROJ, Plc. | CZ | Moravian-Silesian Region |
| Pelhřimov Municipal Authority | CZ | Vysočina Region |
| Penta Investments, Plc. | SK | Bratislava Region |
| Pezinok Philipp Pinel Psychiatric Hospital | SK | Bratislava Region |
| PGL LP Andrychów | PL | Lesser Poland Province |
| PGL LP Brynek | PL | Silesian Province |
| PGL LP Brzeg | PL | Opole Province |
| PGL LP Gniewkowo | PL | Kuyavian-Pomeranian Province |
| PGL LP Golub Dobrzyń | PL | Kuyavian-Pomeranian Province |
| PGL LP Jeleśnia | PL | Silesian Province |
| PGL LP Kędzierzyn | PL | Opole Province |
| PGL LP Kluczborg | PL | Opole Province |
| PGL LP Kobiór | PL | Silesian Province |
| PGL LP Koszęcin | PL | Silesian Province |
| PGL LP Kup | PL | Silesian Province |
| PGL LP Lutówko | PL | Lower Silesian Province |
| PGL LP Namysłów | PL | Opole Province |
| PGL LP Olesno | PL | Opole Province |
| PGL LP Runowo | PL | Kuyavian-Pomeranian Province |
| PGL LP Siewierz | PL | Silesian Province |
| PGL LP Sucha | PL | Lesser Poland Province |
| PGL LP Szubin | PL | Kuyavian-Pomeranian Province |
| PGL LP Ustroń | PL | Silesian Province |
| PGL LP Wisła | PL | Silesian Province |
| PGL LP Zamrzenica | PL | Kuyavian-Pomeranian Province |
| PGL LP Zawadzkie | PL | Opole Province |
| Plzeňská teplárenská, Plc. | CZ | Plzeň Region |
| Počátky Municipal Authority | CZ | Vysočina Region |
| Port Lotniczy Łodż im. Władysława Reymonta, Ltd. | PL | Łódź Province |
| Prague 2 Municipal District Bureau | CZ | Prague |
| Prague 9 Municipal District Bureau | CZ | Prague |
| Prague Motol University Hospital | CZ | Prague |
| Pražská teplárenská Plc. | CZ | Prague |
| Prešov J.A.Reiman Hospital and Polyclinic | SK | Prešov Region |
| Przedsiębiorstwo Gospodarki Miejskiej Ltd. | PL | Lower Silesian Province |
| Przedsiębiorstwo Wodno-Kanalizacyjne EKO-SKAWA Ltd. | PL | Lesser Poland Province |
| Przedsiębiorstwo Wodociągów i Kanalizacji Okręgu Częstochowskiego S. A. w Częstochowie | PL | Silesian Province |
| Przedsiębiorstwo Wodociągów i Kanalizacji Żory Ltd. | PL | Silesian Province |
| Psychiatric hospital Bohnice | CZ | Prague |
| Psychiatric hospital Havlíčkův Brod | CZ | Vysočina Region |
| Raiffeisenbank, Plc. | CZ | Prague |
| Regional Water and Sewerage Ltd. based in Zawiercie | PL | Silesian Province |
| Rudolf and Stefanie Benešov Hospital Plc. | CZ | Central Bohemian Region |
| Schwan Cosmetics CR, Ltd. | CZ | South Bohemian Region |
| Sev.en Engineering Ltd. | CZ | Ustí Region |
| Severní energetická Plc. | CZ | Ustí Region |
| Severočeská teplárenská Plc. | CZ | Ustí Region |
| Silgan Metal Packaging Szprotawa, Ltd. | PL | Lubusz Province |
| Silgan Metal Packaging Tczew, Ltd. | PL | Pomeranian Province |
| Silnice LK Plc. | CZ | Liberec Region |
| ŠKODA PARS Plc. | CZ | Olomouc Region |
| Śląskie Wesołe Miasteczko | PL | Silesian Province |
| Slovak Forestry Commission | SK | Banská Bystrica Region |
| Slovak Health Spa Piešťany, Plc. | SK | Trnava Region |
| Slovalco, Plc. | SK | Banská Bystrica Region |
| Snina Municipal Authority | SK | Prešov Region |
| South Moravian Region Road and Highway | CZ | South Moravian Region |
| ST. NICOLAUS – trade, Plc. | SK | Bratislava Region |
| Statutory City of Havirov | CZ | Moravian-Silesian Region |
| Statutory City of Most | CZ | Ustí Region |
| Statutory City of Olomouc | CZ | Olomouc Region |
| Šternberk Municipal Authority | CZ | Olomouc Region |
| STOCK Plzeň-Božkov Ltd. | CZ | Plzeň Region |
| Stock Polska Ltd. | PL | Lublin Province |
| SUEZ Využití zdrojů, Plc. | CZ | Prague |
| SYNTHOS Kralupy Plc. | CZ | Central Bohemian Region |
| Synthos, Plc. | PL | Silesian Province |
| Szczyrkowski Ośrodek Narciarski | PL | Silesian Province |
| Szpital św. Michała, SA | SK | Bratislava Region |
| T.Bata Regional Hospital | CZ | Zlín Region |
| TATRA, Plc. | CZ | Moravian-Silesian Region |
| Tatry mountain resorts, Plc. | SK | Žilina Region |
| TEDOM, Plc. | CZ | Vysočina Region |
| TEKO, Plc. | SK | Košice Region |
| TERMONTA Praha, Plc. | CZ | Prague |
| Teva Operations Poland, Ltd. | PL | Macovian Province |
| TGM Hodonin Hospital | CZ | South Moravian Region |
| Thomayer Hospital | CZ | Prague |
| Toyota Motor Manufacturing Czech Republic, Ltd. | CZ | Central Bohemian Region |
| Transpetrol, Plc. | SK | Bratislava Region |
| Transport Authority Košice, Plc. | SK | Košice Region |
| Trenčín Air Repairer, Plc. | SK | Trenčín Region |
| Uherský Brod Municipal Authority | CZ | South Moravian Region |
| UNIPETROL RPA, Ltd. | CZ | Ustí Region |
| United Energy Plc. | CZ | Ustí Region |
| University Hospital Plzeň | CZ | Plzeň Region |
| Valašské Klobouky Municipal Authority | CZ | Moravian-Silesian Region |
| Valašské Meziříčí Municipal Authority | CZ | Moravian-Silesian Region |
| VESUVIUS Czech Republic, Plc.VESUVIUS RCz SA | CZ | Moravian-Silesian Region |
| Vodohospodářské stavby Teplice, Ltd. (Water Structure) | CZ | Ustí Region |
| Vršanská uhelná Plc. | CZ | Ustí Region |
| Vyškov Hospital | CZ | South Moravian Region |
| Wheelabrator Czech Ltd. | CZ | Central Bohemian Region |
| Wienerberger brick industry, Plc. | CZ | South Bohemian Region |
| Wikov Industry, Plc. | CZ | Prague |
| Wüstenrot, Plc. | CZ | Prague |
| Yusen Logistics (Czech) Ltd. | CZ | Prague |
| Zábřeh Municipal Authority | CZ | Olomouc Region |
| Žamberk Municipal Authority | CZ | Pardubice Region |
| Západoslovenská energetika, Plc. (East Slovak Energy) | SK | Košice Region |
| Západoslovenská energetika, Plc. (West Slovak Energy) | SK | Bratislava Region |
| Žďár nad Sázavou Municipal Authority | CZ | Vysočina Region |
| Železničná spoločnosť Cargo Slovakia, Plc. (Railway Company) | SK | Bratislava Region |
| Železničná spoločnost Slovensko, Plc. (Railway Company) | SK | Bratislava Region |
| Znojmo Hospital | CZ | South Moravian Region |
| Znojmo Municipal Authority | CZ | South Moravian Region |
| ŽOS TRADING, Ltd. | SK | Žilina Region |
| ŽOS Trnava, Plc. | SK | Trnava Region |