Boston, Massachusetts-based Advent Technologies Holdings, Inc. is an advanced materials and technology firm engaged in the hydrogen and fuel cell markets throughout North America, Europe, and Asia. The company designs, manufactures, and integrates comprehensive fuel cell systems and vital components, which are crucial for the performance of hydrogen fuel cells and other energy solutions. Their offerings include high-temperature proton exchange membrane (HT-PEM) fuel cells, encompassing elements such as membrane electrode assemblies, bipolar plates, and reformers, alongside providing fuel-cell stack assembly and rigorous testing services.