Since our founding by Josef Jansen in 1923, we have developed from a small armored tube factory to a leading supplier of steel and plastic systems. Our history is characterized by innovative spirit, continuous growth and strong roots in the Oberriet region. As a third-generation family business, we attach great importance to long-term partnerships, social responsibility and the promotion of our employees. 1. Steel systems for windows, doors and facades We develop and produce high-quality steel profile systems for windows, doors, facades as well as folding and sliding systems. Our products are characterized by high stability, durability and aesthetic design and meet the highest safety requirements. 2. Plastic solutions for a wide range of applications Our plastic systems offer tailor-made solutions for various industries: Profile extrusion: Custom-made plastic profiles that are used in various industrial sectors. Water management: Drainage systems, shaft systems, double wall systems and stormwater management solutions that impress with their quality and durability. Home technology: heating, sanitation and air conditioning systems that ensure efficiency and reliability in building technology. Geothermal energy: geothermal probes, collector systems and distribution systems for sustainable energy generation from the earth.