Bertrand Windows and Doors

Bertrand is an ambassador of passive construction

BERTRAND is an ambassador of passive construction.

For another year in a row, the BERTRAND company received the status of Passive Construction Ambassador from the Polish Institute of Passive Construction and Renewable Energy. Gunter Schlagowski in the production of construction joinery recommended for installation in passive buildings.

We are very pleased when our efforts are appreciated by the most important industry institutes and groups of experts.

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