Our Partners

Kommerling logo


Today, plastic is the most successful window material and its market share is constantly growing. In residential construction, its share is of 60 % whereas even seven out of ten windows used in renovation of old buildings are made of...

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siegenia logo


Our aim is to consistently implement visions in the real world. We achieve this thanks to a stimulating and process-oriented corporate culture, open-mindedness and customer orientation. We successfully combine these characteristics with high quality standards and exceptional innovativeness. 

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Roto logo


All over the world, Roto is synonymous with innovative, individual and secure hardware systems that increase the added value of windows and doors for people.

Our solutions combine intelligent security, energy management and comfort in buildings, and in so doing...

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