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| Company | Country | Branch |
| Aquacell Technologies | USA | Environment |
| B.U.S. Berzelius Umwelt-Service ST | Germany | Environment |
| B.U.S. Berzelius Umwelt-Service VZ | Germany | Environment |
| BGI zu Höne, Klußmann, Altpeter | Germany | Environment |
| Bion Environmental Tech. | USA | Environment |
| BWT Best Water Technology | Austria | Environment |
| Casella Waste Systems, Inc. | USA | Environment |
| CFF Recycling | France | Environment |
| Citron Holding | Switzerland | Environment |
| Drägerwerk | Germany | Environment |
| Environmental Elements Corporation | USA | Environment |
| Gelsenwasser | Germany | Environment |
| Interseroh | Germany | Environment |
| KFX Inc. | USA | Environment |
| Lino Diagnostic | Germany | Environment |
| Lösch Umweltschutz AG | Germany | Environment |
| Mercury Recycling Group | United Kingdom | Environment |
| NEG Micon | Denmark | Environment |
| Probex | USA | Environment |
| Rentokil Initial | United Kingdom | Environment |
| Sauter Holding | Germany | Environment |
| Sero Entsorgung | Germany | Environment |
| Shanks Group | United Kingdom | Environment |
| Suez SA (früher: Suez Lyonnaise) | France | Environment |
| SW Umwelttechnik Stoiser & Wolschner | Austria | Environment |
| Thames Water | United Kingdom | Environment |
| Tomra Systems | Norway | Environment |
| Umweltkontor Renewable Energy | Germany | Environment |
| Vestas Wind Systems | Denmark | Environment |
| Vivendi Environment | France | Environment |
| Waste Management | USA | Environment |
| Waste Recycling Group | United Kingdom | Environment |
| Wedeco | Germany | Environment |
| Index | 0 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Home |