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Advent Technologies Holdings Inc is an innovation-driven company in the fuel cell and hydrogen technology space. The company develops, manufactures, and assembles complete fuel cell systems and the critical components that determine the performance of hydrogen fuel cells and other energy systems. It serves automotive; aviation and power generation industries. It generates revenue from the sale of fuel cell systems and the sale of MEAs, membranes, and electrodes for specific applications in the fuel cell and energy storage (flow battery) markets.
Momentus Inc offers in-space infrastructure services by building transfer and service vehicles that carry satellites and hosted payloads between orbits in space. It is a provider of three critical functions in the new space economy: Space Transportation, Satellite as a Service, and In-Orbit Servicing.