Extended warranty service

By carrying out our own in-house production, we are able to supply guarantees for optimisation of performance and service life which are significantly more extensive than what is standard in the sector. Guarantees, for example, above and beyond the normal sector standards for both the intrinsic function and the sustainability of performance. Instead of the usual 20-year guarantee of a performance level of 80 percent, we still guarantee this performance after 25 years.