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PORR AG is an Austrian construction company headquartered in Vienna, operating across building construction, civil engineering, infrastructure, project development, and environmental engineering sectors. Founded in 1869 as Allgemeine Österreichische Baugesellschaft, it is Austria's oldest listed company. PORR's services encompass the construction of offices, hotels, universities, stadiums, tunnels, bridges, railways, and power plants. The company has a significant presence in Central, Eastern, and South-Eastern Europe, with operations in countries including Germany, Switzerland, the Czech Republic, Poland, Slovakia, Romania, and Norway. In 2023, PORR reported a production output of EUR 6.577 billion and an order backlog of EUR 8.452 billion. Its strategic focus on infrastructure projects, such as the Brenner Base Tunnel and the SuedLink wind-power line, positions it to benefit from ongoing developments in the energy transition and infrastructure expansion.

GE Aerospace is the global leader in designing, manufacturing, and servicing commercial aircraft turbine engines, along with partner Safran in their CFM joint venture. With its massive global installed base of nearly 80,000 commercial and military engines, GE Aerospace earns most of its profits on recurring service revenue of that equipment, which operates for decades. GE Aerospace is the remaining core business of the company formed in 1892 with historical ties to American inventor Thomas Edison; General Electric became a storied conglomerate, with peak revenue of $130 billion in 2000, until it spun off its appliance, finance, healthcare, and wind and power businesses between 2016 and 2024.