SW Umwelttechnik Stoiser & Wolschner AG engages in the development and production of precast concrete parts for infrastructure projects. It operates through the following segments: Civil Engineering and Transport; and Building Construction and Living. The Civil Engineering and Transport segment engages in development, production and sale of products related to Wastewater drainage, Wastewater treatment and Transport construction. The Building construction & Living segment engages in development, production and sale of products related to Energy construction, Industrial construction and Residential construction. The company was founded by Josef Stoiser and Karl Friedrich Wolschner in 1910 and is headquartered in Klagenfurt, Austria.