| Advanced Tower Systems BV |
| NL-7500 AG Enschede |  |
| > | Hybrid towers |
| > | precast concrete |
| > | large hub heights |
| > | turnkey delivery |
| > | product licensing
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| airwerk GmbH |
| D-45145 Essen |  |
| > | construction and realization of steel lattice towers in all required heights |
| > | planning |
| > | realization and sale of windfarms |
| > | Engineering and quality assurance of civil works and steelworks |
| > | Service and maintanance
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| Ambau GmbH |
| D-06773 Gräfenhainichen |  |
| > | Steeltowers Offshore and Onshore |
| > | Steelfoundations
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| FORCE Technology |
| DK-2605 Brøndby |  |
| > | Optimization of production and processes |
| > | Materials utilization / protection and analysis |
| > | Inspection / testing / calibration / verification and certification |
| > | Sensor technology development and application |
| > | Energy and environment
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| RADOLID Thiel GmbH |
| D-58509 Lüdenscheid |  |
| > | corrosion protections |
| > | rotor blade nuts
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| RS Kunststofftechnik |
| D-58791 Werdohl |  |
| > | Anticorrosives |
| > | Pole bases |
| > | foundation blocks |
| > | Screw protecting caps |
| > | Screws and nuts
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| SeeBA Energiesysteme GmbH |
| D-32351 Stemwede |  |
| > | Project planning |
| > | Project development |
| > | Construction |
| > | Lattice tower |
| > | Development for tower systems
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| SeeBA Technik GmbH |
| D-32351 Stemwede |  |
| > | Project planning |
| > | Project development |
| > | Construction |
| > | Lattice tower |
| > | Development for tower systems
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| SIAG |
| D-56428 Dernbach |  |
| > | windenergytechnology |
| > | towers |
| > | mainframes |
| > | components |
| > | Canada
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| Flanschenwerk Thal GmbH |
| D-99947 Schönstedt |
| > | flanges for windtowers |
| > | cutting parts |
| > | mechanical tratment til diameter 5000 mm |
| > | special flanges in according to customer drawing |
| > | steeltrings
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| KGW Schweriner Maschinen und Anlagenbau GmbH |
| D-19055 Schwerin |
| > | Steering gears and complete rudder systems |
| > | Special deck cranes |
| > | Winches |
| > | Steel- tube towers for wind turbines |
| > | Wind-powered autarkic heating/cooling systems
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