| new since... | you will find... |
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| 14:21 23.1.2004, Freitag | May we present some more projects as references? This includes the description of what we did to save energy. |
| 15:13 10.3.2002, Sonntag | We had to divide websites to straighten contents. Heating solutions you will find at heatingoperation.de, our profile here, our references here. |
| 23:05 1.3.2001, Thursday | Our remedial project 'Obermühle' has long-term savings of about 1022 Euros for liquid gas every year! |
| 18:26 28.1.2001, Sunday | We have been able to achieve more than 29'000 hits per month on our website. |