For more than 40 years the BOSIG group has developed and produced innovative system solutions for the industry, trade, and construction. Our customers can rely on the expertise of our teams. Our internal development department researches, tests and determines the best product for our customers needs. That is how ideas turn into impressive BOSIG products. Our aim is it to inspire you with our products, and with our service – today and in future. Make use of our expertise for your requirements. Our energy-saving solutions for window sealing with Winflex, Fasatan/tyl, Combband, Winfix, TFU, TFS, Phonothern 200 help you to achieve passive house standard.