Uponor Oyj Uponor Oyj, a Finnish provider of plastic pipe systems for plumbing, indoor climate control, and infrastructure solutions, manufactures and markets products including PEX and multilayer composite pipes for potable water delivery and radiator connections; decibel-reduced soil, waste, and drainage systems with sound insulation, air admittance valves, shower inlets, and grates; radiant underfloor, wall, and ceiling heating and cooling systems for residential, commercial, and public buildings; electric underfloor heating; prefabricated plumbing and heating modules; Ecoflex pre-insulated flexible pipes; room and supply temperature controls; manifolds and distribution units; and infrastructure products such as Weholite structural profile pipes and Wehopanel tanks for water, wastewater, stormwater management, gas distribution, and telecommunications. The company operates through Building Solutions–Europe, Building Solutions–North America, and Uponor Infra segments, serving building professionals like distributors, installers, architects, and contractors primarily in Europe and North America with additional presence in other regions. Founded in 1918 and headquartered in Vantaa, Finland, Uponor Oyj was acquired by Georg Fischer AG in November 2023 for 2.2 billion euros and now functions as part of GF Building Flow Solutions, integrating its building services portfolio with GF and JRG brands to enhance offerings in safe water supply, wastewater systems, and energy-efficient heating and cooling; it completed full ownership acquisition of Uponor Infra Oy in August 2023 by purchasing the remaining 44.7% stake from KWH Group for approximately 60 million euros, with Uponor Infra's North American operations sold separately in 2017 to become Infra Pipe Solutions.